After a good night's rest, Sarina finds herself back in Donatello's lab. She paces back and forth across the floor, arms folded tightly behind her back and her body aimed forward at a rather sharp angle. Donatello occasionally glances up at her before returning to work on a new t-phone, but the rhythmic slapping of her feet on the floor doesn't make it very easy for him to focus.

"Sarina?" he calls, making his voice as sweet as possible. She doesn't stop pacing. "I sense that there's something on your mind. You pace when you think."

"I cannot...stop...thinking," she says, "about Leonardo..." Donatello's head snaps up, eyes wide, and she adds, "and Destiny..."

"Oh shell, that freaked me out for a second," he breathes. He rests one hand against his chest and whistles.

"They are almost infuriating," Sarina says, stopping just long enough to stroke her chin. "There must be something going on. The way they act, showing how much they care—gah!" She pouts heavily. "I am far too curious about those two."

He sighs. "Here's the short answer to your question: they were dating, they broke up, but they still have feelings for each other. Des is just...emotionally unavailable. Boom." He fits a screen onto the shell-shaped outer layer of the t-phone with the precision of a surgeon. He takes out a small hammer and begins tapping lightly at the corners of the newly-constructed phone.

She spins to him, her eyes flashing as she perks up. "I am going to spy on them."

He jerks so hard that he nearly bashes the hammer against the middle of the screen. He groans and sets the tool down, pinching the space between his eyes. "Can you...not say things like that when I'm working or drinking or anything? Every time..." he mutters.

"What is wrong with a little observation?"

"No, no no no, you said spying," Donatello says, lifting himself to his feet as he wags his finger at her. "Spying is about secretly collecting information. It is sneaky, it is rude, shall I go on?"

"Alright, then I will not spy. I will observe."

She turns on her heel and heads out of the lab. He squeaks and scrambles after her, nearly tripping over a spare chair as he does.

"Sarina, no," he says.

"You cannot stop me."

He grabs her arm and plants his feet. "I can sure as shell try."

She keeps walking, her face screwing up with effort as, slowly but surely, his feet start to drag against the floor. He grunts and puts his weight against her, but she pulls even harder in the opposite direction. Sweat appears on both their foreheads.

"How...are you...so strong?!" he pants.

"You know exactly how," she retorts, eyes flashing. "Healthy young man strength, remember—" She grunts. "—Donatello?"

"Sarina, I'm telling—" He gives a desperate, two-armed tug to her. "—you, this is...a bad idea!"

"My curiosity requires answers!" she cries.

"What the heck are you two doing?"

Both mutants stop as their heads snap to the voice. Raphael stares at them over the edge of his comic book, one eye-ridge arched. Donatello and Sarina separate, the former turning beet red as the other folds her arms behind her back and dons a poker face.

"We were...just...uh..." Donatello rambles.

"Engaging in tug of war. It is a game," Sarina says with a curt nod. Raphael's disbelief spreads.

"Yes! Exactly!" Donatello says. "But, obviously, we're disturbing you, so we'll just go finish our game in the dojo! Bye, Raph!"

The purple-masked turtle snatches Sarina's arm yet again and races off to the dojo at full speed, dragging her along behind him. They get inside, instantly detaching from one another and putting some distance between them. Donatello crosses his arms over his plastron and frowns.

"My point stands. No spying on Leo and Des," he says.

She returns his frown. "It does not involve you, so why do you care so much?"

"Because you just got back into Destiny's good books and maybe I don't want you to ruin that—again!"

She touches the spot over her heart. "Reopening old wounds...that is almost cruel, Donatello."

He narrows his eyes. "Since when are you sassy?"

She smirks. "It is something that I've picked up on."

He exhales and switches his hands to his hips. "Well...at least Leo and Des aren't here. I can keep a close eye on you and—"

Leonardo's voice from outside stops him mid-sentence. "Thanks for the tea, Sensei. I'm just gonna be in the dojo."

Donatello's face pales. "Oh no," he squeaks. "Uh...uh..."

He looks around the dojo, his brother's footsteps getting closer every second, and at the last possible moment, he snatches Sarina and they dive behind the tree. Leonardo walks in and moves to the centre of the dojo, where he begins to stretch. Donatello keeps one hand clamped over Sarina's mouth, his heart pounding. He hardly breathes.

Even with his hand blocking her mouth, she tries to speak. "On a pillow. On a pillow!"

He lifts his hand away. "What?" he mouths.

"Donatello," she repeats. "I don't appreciate being handled like that. It was very Kraang-y."

He exhales heavily through his nostrils. "We need to leave," he says, keeping his voice as quiet as humanly possible.

The faintest trace of a smirk lifts her lips as her eyes flash. "I don't. This is perfect."

"Shush, it is not," he snaps. "Besides, Des isn't here."

"Why did you hide us instead of just apologizing and leaving the dojo when Leonardo came in? It is not like you aren't allowed in here."

He turns red yet again. "Yes. Thank you for pointing that out," he mutters through gritted teeth.

"You're welcome."

He peeks out to find that Leonardo is now doing sit-ups with his shell turned to them. The purple-masked turtle presses his lips together and ducks back into hiding. "Alright, if we go now, he'll never know that we were here. Go full stealth."

She blinks. "I am not stealthy."

"Just follow my lead."

He waits, counting down from three on his fingers, and once his hand closes into a fist, he moves to abandon his hiding spot. Just as he does so, Destiny walks into the dojo. She has her head down, her hands focused on tying her thick brown curls into a high ponytail. The black streak is the only strand that escapes her roaming fingers.

Donatello is back behind the tree in a flash, Sarina staring at him blankly. "Shell," he cusses. "They train together. How could I forget?"

Her eyes flash. "God has smiled upon me and my plans," she murmurs.

He seems to remember something, eyes widening. He lifts a finger to his lips and mouths out "hearing of a wolf" and points out at the dojo discreetly. Sarina nods.

"Sorry for keeping you, Leo," Destiny says. "Had to change."

The spectators peer out at the two mutants. Leonardo is still seated, but his eyes are only on Destiny. She's wearing an outfit that Donatello can confidently say he has never seen before, which leads him to believe that neither has Leonardo, that consists of tight-fitting shorts that cut off just above the knee and a black sports bra. The tight material hugs her curves, showing the muscle she's worked hard to cultivate.

"There was a buy one, get one sale at some place, so April gave the extra stuff to me," Destiny says with a light smile. "They're specially made for working out. What do you think?" She does a little spin, her tail swishing around her legs as she does it.

Leonardo's gaze flits from her eyes to her feet and back up again. "You look great," he says.

"Thanks," she replies with a tiny smile. He returns the gesture and she glances around, making their unknown spectators hide again. "Are we going to spar today?"

"If you're up for it." He stands, wringing out his arms and cracking his neck. "But..." he continues. "You need to do some relaxation first. You had another big one last night."

Her ears flatten. "It wasn't that bad." He gives her a long look and she crumbles a little. "Okay, fine...good call," she says. "Melanie said in her last email that yoga can really help me, anyway."

"You're still emailing her?"

"She's my therapist, Leo. Of course I'm still emailing her."

The wolf mutant lets out a small laugh. There's a beat of silence where both Donatello and Sarina hold their breath, worried that even the smallest noise will give them away. Leonardo averts his eyes and fidgets, debating internally.

"Have you...heard from Diaval?" he asks, treading on glass.

Destiny deflates. She reaches up and scratches at her collarbone, shaking her head. "No," she says. "He's not great at spelling, so...emailing doesn't work, then there's the long distance with phoning—" She shakes her head. "Melanie said that he's good, though. He's helping Oscar get the barn winter-ready. He likes all the hands-on work."

"Oh, good. I'm glad he's got something to do."

"Yeah...me too."

More silence. Destiny turns away and settles onto the floor, but Leonardo keeps looking at her. Sarina tries to decipher the emotions on his face: pity, maybe longing? She purses her lips and makes a mental note to herself that she wants to get better at reading faces.

"What'll you do while I do yoga?" Destiny asks, switching the topic back as easily as if flipping a coin.

Leonardo reverts to his calm, more confident aura. "Stretches, then a couple of katas. Once you're done, we can spar."

"Cool." She pulls out her t-phone. "Mind if I play music?"

"I would actually love some music."

She smirks. "I've gotchu," she jokes, earning a laugh from him.

She turns on soothing music that Sarina instantly guesses is traditionally Japanese. Destiny lays down on the floor, positions her hands on either side of her head, and arches into the chakrasana position, her body becoming an arch in an instant. Donatello peers out at her, face blank and eyes wide. Sarina pokes him and he jolts slightly before looking to her.

"You look stunned," she whispers.

He gulps. "Uh...she's just..." He averts his eyes. "Flexible." Her eyes flash as her eyebrows furrow. "Never mind."

Destiny keeps changing poses, arching and curving and stretching with grace. Her eyes remain closed and her breathing stays even as she goes completely zen. Leonardo works on his own, focused intensely on two things at the same time: his katas and not looking at Destiny for too long.

Sarina notices his wandering eye. "He is distracted by her presence," she whispers. "Why is that? All she is doing is yoga."

"Exactly," Donatello mutters.

"Huh?"

He turns red. "Nothing..."

"No, tell me," she presses. Their voices are still barely a whisper.

"I'd rather not."

"Please?"

He sucks in a breath. "I'll...tell you later."

She decides to be alright with that for the time being.

After a while, Leonardo completes his kata. He retrieves his katanas from the weapon's rack and turns to Destiny. She stands with one foot braced against her thigh, forcing her to balance on one foot like a flamingo.

"Des, you almost done?" he asks.

She reverts back to standing normally and nods. "Yeah, I'm good," she says. She gets her uchigatana and joins Leonardo out in the centre of the floor, her tail starting to wag as she flashes a grin. "I think today is the day I take you down."

He laughs. "Aw, you're so cute when you're delusional."

Her eyes glint. "Oh, it is so on."

They ready their weapons, Leonardo with only one katana. They size one another up, adjust their grip, and Destiny lunges. Leonardo deflects her attack, then retaliates, forcing her back the way she came. They sweep, kick, lunge, parry, thrust, duck, dodge. Her blade is swift, perfect for slicing, but his blade is sturdy and blocks her attempts with minimal effort.

Sarina watches in awe.

They cross swords between them, eyes locking and teeth gritted. Destiny is already panting, sweat beaded on her forehead, and yet he looks as if nothing has changed. She grins through her heavy breaths, pressing the blade closer to him as her muscles tense.

"I've still got this," she says.

"Like I said before—"

He grunts as he twists his katana around, hooking the curved edge of her blade and wrenching it from her hands. It clatters to the floor as he sweeps her feet out from under her, knocking her flat onto her back. He aims his weapon down at her as he flashes a winning smile.

"Delusional," he finishes.

She rights herself enough so that she's crouching on the ground. Her fangs glint and her tail starts to wag. His smile falls as he raises an eye-ridge.

"Think fast!" she cries.

She lunges, morphing into a wolf mid-stride and tackling the turtle to the floor. He lands with a heavy grunt and she instantly returns to human form, keeping him pinned solidly beneath her. She leans down until their noses are nearly touching, her hands tightening around his wrists.

"I win," she states.

"You already lost," he retorts. He wiggles and she presses herself onto him further, ceasing his movements. He exhales as a tiny smirk lifts his lips. "Actually," he says, "I think I'm still winning."

"You jest," she teases.

He moves too fast for her to comprehend. With a quick flip, she's on her back again with Leonardo on top. Her face is a mask of shock for a split second, then it fades to an incredulous sort of annoyance. He laughs, arms shaking, and she pouts at him as she struggles to free herself.

"You're terrible," she mutters, "and heavy."

"You don't care about weight when you pin me down," he says. "In wolf form, might I add?"

"That's the only way I can catch you off guard," she retorts. "Let me assert my dominance!"

"Never!"

They glare intensely at one another. Leonardo breaks first, starting to snicker, and Destiny is quick to catch the contagious laughter. The amusement builds, churning and growing until it's uncontrollable and loud. He rolls off of her, collapsing at her side as they dissolve into giggles, bodies quivering and eyes squeezed shut against happy tears. Destiny's barking, howling laughter rings in the spacious air, overpowering all else.

Sarina stares, unbelieving. "What sort of sorcery is this? I saw nothing funny happen."

Donatello refuses to look, face red, and she nudges him in an attempt to get him to talk. He responds by lifting her off her feet and running out of the dojo without a sound, their escape masked by Destiny and Leonardo's continuing laughter. Home free, Donatello sets Sarina down and comes eye to eye with her shocked stare.

"What was that for?"

He makes a few exasperated noises before clapping his hands over his face. "Okay...you know what? You don't have all your feelings. I get that. I, on the other hand, feel every emotion that is humanly possible, which is why you don't understand HOW INCREDIBLY UNCOMFORTABLE THAT WAS."

She blinks a few times, studying the flushed and red face of the turtle standing before her. She rolls her shoulders, lips drawn in continued thought, then takes a deep breath. Donatello starts to fidget, eyes darting over his shoulder to the dojo while he waits for her to say something.

"I think that you're only upset because you're attracted to Destiny in some way," she says.

He chokes on air, starting to sputter like a broken motorboat propeller. "Wha—NO! That's not it!" he insists. "That's...no. No."

Sarina's eyebrows lift and she crosses her arms over her chest. "Oh, so you think she is ugly?"

He gets even redder than before. "No!"

"Then you are attracted to her."

"NO! I...ugh!" Again, his hand meets his face for a second. He sweeps his hand out at nothing in particular and rotates it as he tries to find words. "She's cute, but it's not like I've got a crush on her. She's my friend! She's more like a sister to me."

"Then why were you flustered?"

He resorts to staring at her in disbelief, frustration boiling over. "Do I really have to explain this to you?" he demands. "You don't have the slightest guess as to why seeing a woman, dressed like that, doing yoga and curving her body the way she was, would make me flustered? DO I REALLY HAVE TO SPELL IT OUT?!"

"Does it matter if it's a woman?" she asks, eyes flashing. "I assumed that anyone could be attracted to anyone."

"It's about preference, but that's not the point!" he snaps. He holds up his pointer finger and shuts his eyes. "My point is that there is something called hormones and anyone remotely attracted to females would find that attractive. It's something that just happens, like an automatic process!" He groans and slumps almost entirely to the floor. "This is embarrassing on so many levels..."

"So...your body is attracted to Destiny but everything else is not? Is that how Leonardo feels?" Sarina's eyes flash rapidly. "I have heard of hormones, but having never felt such urges, I didn't think that they were all that present." She glances over Donatello's shoulder and smiles a little. "Hello Leonardo. How was training?"

Donatello's face pales as he whirls around. Leonardo stands a few feet away from them, arms crossed tightly over his plastron, wearing an expression that could kill a man in one blink. He takes a few steps closer to them, making Donatello squeak and back up.

"H-Hey Leo," he stammers.

"So...you were not only spying on our private training session, but you were ogling Destiny?" Leonardo asks. His voice, usually calm, is starting to wobble.

"Ogling is a strong word," the taller turtle says. "And I did not mean to spy, Sarina just—"

"Donatello, you are the one who—" Sarina starts.

He promptly clamps his hand over her mouth and flashes an anxious smile at his older brother. Leonardo is still seething. The purple-masked turtle launches into a frenzied explanation, his mouth hardly able to keep up with the words he's trying to spit out.

"All I said is that she's cute, Leo," he defends. "Cute! That's not disrespectful, and besides, you know that I would never do that to any woman!"

"That doesn't validate the two of you spying on us in the first place," Leonardo replies, jabbing his finger against Donatello's plastron.

Donatello smacks his hand away. "That was an accident and a generally unfortunate series of happenings!"

"I wanted to observe. It was my idea," Sarina states, but the brothers aren't listening to her anymore. They're too busy arguing back and forth, starting to push and poke at one another more and more by the second.

Sarina zones out as she watches them, imagining that they're little cartoon characters with oversized weapons. They repeatedly smack each other as cartoony exclamation marks and pound signs and other symbols appear above their heads, and her imagination only gets wilder once they start tackling one another. She wonders whether this outburst is also caused by the hidden power of hormones, seeing as she's never seen Donatello act so brutishly.

Destiny comes out of the dojo and immediately stops in her tracks, her face flooding with confusion at the sight of Leonardo and Donatello rolling around on the floor in a flurry of shouts and fists. Raphael and Michelangelo enter, one from the bedroom hallway and the other from the kitchen.

"Woah, someone's fighting Leo and it isn't Raph?" Michelangelo asks. "That's wild!"

"You're lucky I'm not close enough to smack you," Raphael calls, already walking towards the others.

"What happened?" Destiny asks. "Sarina?"

"I think that it would be better if you found out later."

Michelangelo bounces over to the girls, just then taking notice of Destiny's outfit. He whistles. "Looking good, Des," he says. "Is that new?"

She smiles. "It is. Thanks for noticing."

Leonardo stops fighting Donatello for a moment, spurred by Michelangelo's comment. The eldest turtle looks to Raphael just in time to see his brother look Destiny over, then nod in silent approval. Leonardo's rage spikes.

"ALL THREE OF YOU NEED A LESSON IN RESPECT!" he roars. Donatello scrambles away and Leonardo gives chase, now pursuing Raphael and Michelangelo.

"What did I do?!" Michelangelo shrieks.

"Leo! Holy shell, man, chill!" Raphael shouts.

"JUST RUN! RUN FOR YOUR LIVES!" Donatello cries.

Destiny watches the madness for a few more seconds before her ears flatten and she tucks her tail between her legs. "Sarina?" she asks. "Would you help me, please?"

Sarina nods. "I would be glad to help."

The girls disappear into the kitchen in search of someone more mature than themselves.