Usually I call it split timelines that go on forever. Think of it like a tree branch. Time flows endlessly but alternate timeline's are split with different paths. So if Cat Blanc is still stuck in the altered timeline, then the current timeline is still going and untouched. Meaning he would still be existing but he can or cannot exist in the current timeline because the current Adrien is still alive and never been akumatized. So Blanc would simply be a ghost or not.

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At the infirmary, Marinette had a patch on her shoulder and was relieved that the surgery was a success to remove the bullet out. Adrien became very overprotective of his lady that it's too dangerous for her to fight when she's injured.

"That freak is gonna pay for trying to kill you, Princess" Adrien said.

"I told you she's not gonna redeem herself!" Marinette was stifled by her injury.

"She's twice the monster Gabi is," Adrien said.

"It looks like we need the entire team to get her," Marinette said.

"No way, milady. She's expecting us to bring an army so she can turn them undead. It's too risky" Adrien said.

"Good point, Kitty" Marinette agreed.

Soon Marinette's parents came to check on their daughter, "My baby girl, how are you feeling?" Tom asked.

"Is she doing okay, Adrien?" Sabine asked.

"She's doing fine, Sabine," Adrien said.

"I'm okay. Just angry that Lila would go too far to kill me just because I exposed her in school" Marinette said.

"Well I'm proud of what you did Marinette and I'm also glad you Adrien are so supportive of her," Tom said.

"I get so scared if I lose her" Adrien held Marinette close, purring in her neck.

"Awww.... You purring?" Marinette scratched his chin.

"Ummm..... yeah" Adrien blushed.

"Seems we got a real kitty in the family" Sabine joked.

"Does this mean I get to be my princess kitty?" Adrien purred.

"Yup, my future son-in-law," Sabine said.

They all left the two so they can be alone. Adrien was still worried about his lady too much. That bullet would have hit her chest and she would forever be gone forever. The two teens sat on the bed.

"I never thought Lila has gone crazy enough to try to kill me," Marinette said.

"She's very inhuman now. I'm afraid we have to end her life" Adrien licked her neck while purring.

"She has become a danger to herself and everyone. We might have no other choice then" Marinette moaned.

"But we are not killers. Well, we do kill zombies but don't you think it's like breaking the code of being a hero?" Adrien asked.

"Somes heroes have to do the right thing by breaking their moral code," Marinette said.

"I thought so. No one is immune to being bitten, milady. Someone has to have a dead soul to do that" Adrien said.

"I know who but it's not a good idea to bring him in this timeline," Marinette said.

"Who?" Adrien asked.

"Cat Blanc. He's too dangerous and extremely twisted up" Marinette replied.

"Oh, well I don't like that one," Adrien said.

"But he's indestructible and he can't feel pain. Maybe he's our only chance, Adrien. He would do things for me, I think" Marinette hides her face in his chest.

"I'm not sure Marinette, it might be too risky" Adrien held her close.

"Lila is too dangerous and strong. It's been a year, kitty. Cat Blanc is our only chance to stop her. If I can tame him, he'll listen. He wouldn't hurt me" Marinette said.

"But you do know he hates seeing another cat competing. I would have no choice but to do a catfight with him" Adrien said.

"I suppose" Marinette laid down.

"Alix is still in the burrow, making sure nothing happens to us. We are gonna need her to search for alternative timelines" Adrien said.

"Okay. The one I met is erased" Marinette said.

-

A while later, Cat Noir made sure that Ladybug is okay from her injury. If anything happens to her, he has to make sure he protects her no matter what. Right now, young Bunnix in her burrow is looking for split timelines that have different paths and fate that leads to events of the time.

"Here! This one was erased" Bunnix rewinds the events to the exact moment when Blanc was all alone in the building.

"There he is. Blanc" Cat Noir said.

They see he's becoming twisted up with loneliness and depression. The only food he eats is fish in the water to survive.

"Let's do it," Cat Noir said.

"If he gets aggressive, do the cat fight," Ladybug said to her kitty.

"Just like I did with Copycat" Cat Noir jumps in through the time portal.

"Hello there," Cat Noir called to his counterpart.

"What the hell? MEEEEOOOOWWWWW!!!!!" Cat Blanc shrieks like a cat in anger.

"Hold it! Please listen to me!" Cat Noir tries to reason with him.

"You're not real! Get out of my goddamn head!" Blanc tackled him and it turned into an actual catfight.

Cat Noir then strikes his paw at Blanc's face. Both of them yowled and rolled on each other like cats, fighting crazy. It was evident that Noir was more experienced in fighting against his white self. He punched Blanc in the stomach to stun him.

"Calm down, akuma me! I'm real!" Cat Noir waits for Blanc to calm down.

"Why should I believe you?!" Blanc growled, holding his stomach.

"Because you're me! Milady told me what really happened to you, I mean us! Our father was that monster the whole time! Right now, my future is more at stake than yours!" Cat Noir explained.

"And that is?" Cat Blanc asked.

"Lila Rossi has become Purple Volpina and turned nearly of Paris to zombies," Cat Noir told him.

"You're kidding, right? And where the hell did you come from? There's no way a future like that can happen when mine is already dead!" Cat Blanc snarled.

"Because this is a split timeline! If you don't believe me, see for yourself. My lady is alive! I swear" Cat Noir brings him to the rabbit burrow and into the current timeline.

"Welcome to this timeline," Bunnix said but Blanc hissed in defense that he doesn't trust anyone.

"Adrien" Marinette appeared as herself.

The white feline stood there in shock at how much he has missed her but this was not his princess since she is dead in his timeline, "Marinette" He spoke out.

Then he walked on all fours, smelling her and rubbing his sides on her like a cat.

"What the hell is he doing?" Cat Noir raised a brow.

This made Blanc snarl in defense that there are more people around but Marinette calms him down by scratching his chin.

"Calm down, kitty. Calm down" Marinette shushed him.

Blanc started to purr as she scratched him. As soon as he calms down, he wanted more attention from her since he's been alone for too long. He felt Noir pet him but Blanc did not like to be petted by anyone but his princess.

"Blanc, let him pet you. You need more comfort from us" Marinette said.

"Trust in yourself," Cat Noir said.

Nino steps up, causing Blanc to remember him. Fresh memories of his best friend being there for him like a good friend.

"It's me, Nino. Your best friend" Nino said.

Unfortunately, Cat Blanc has lost a bit of his human behavior due to his twisted-up loneliness but then he smells someone familiar that made him growl. He ran downstairs to meet his cruel father, even if this is not his father from his timeline.

"You're not Hawk Moth but you destroyed my life!" Cat Blanc snarled.

"What are you talking about?!" Gabriel has never seen a white feline with soulless blue eyes.

"I'm your son from another timeline! You akumatized me and I destroyed everyone and everything there with my powers!" Cat Blanc shouted, "That madman abused me like I'm nothing to him! You were a psycho to think bringing mom back would be a happy ending!" Blanc wanted to kill him but got restrained by Ladybug and Cat Noir.

"Cat Blanc, calm down! Calm down please!" Ladybug strained.

"If it makes you happy, he forced me to cataclysm him and now his body is slowly being spread by it! He doesn't have much time left!" Cat Noir yelled.

"WHAT?!" Blanc stopped resisting, "So he's dying? Serves him right for trying to take away everything I loved!"

"We can fix your timeline once all this is over. You'll have all your love returned and the moon fixed" Marinette tries to assure him.

"Fine. And who has done this world now? I smell decayed bodies a mile away" Cat Blanc asked while glaring at Gabriel that's in his prison.

"I akumatized Lila Rossi into a zombie-controlling version of Volpina," Gabriel said.

Cat Blanc laughed insanely, "How ironic that you did the same thing to me whenever an akumatized victim turns against you. You really are insane with mental madness"

Cat Noir backed off nervously, "This is a bad idea, Princess"

"You wanna know what really happened in my timeline? You sent Nathalie with the tablet to force Marinette to break up with me or you'll pull me out of school and I will never see her or my friends ever again! Your stupid plan was to get her akumatized but I saved her in time as Cat Noir! Unfortunately, you knew my identity and you showed me why you wanted that wish so you can revive my mother! You betrayed me and akumatized me! The power was uncontrollable and it killed everyone but me in Paris! Everything was gone! My Marinette was gone! But now I smell the cataclysm spreading on your body, you deserve a death wish now!" Cat Blanc got all his anger out but then felt Marinette pet him as he calms down.

"Whoa, I never knew you would go this far, especially trying to separate me from my love" Cat Noir glared at his father.

"You really are your mother's son," Gabriel said.

"Thank god I don't have your evil twisted traits," Cat Noir said and brought his counterpart to the cafeteria to get him something to eat.

"Meow" Cat Blanc sniffed and walks over to pick up his tray of food.

Cat Noir knew he's starving like hell already but knowing that his counterpart lost his human behavior.

"So your story is true? Our father really did not approve of us being in love with our princess?" Cat Noir asked.

Blanc munched on a drumstick like an animal while being his food to the table, "Yes. He expected me to be on his side but I was lost"

"His plan backfired but at the cost of everyone," Cat Noir said.

"Yes. All because he cares about getting mom back instead of seeing that I moved on with a new life" Cat Blanc ravenously ate the roasted chicken but spit out the bones.

"So have I, but Su Han is helping me and milady in bringing her back without any wish," Cat Noir said.

"Who the hell is Su Han?" Blanc asked and licked the bone.

"I'll bring you to him after you're done eating," Cat Noir said.

"Do you know how long I was forced to starve without dying?" Blanc asked and continues to eat.

"Far long enough?" Cat Noir guessed.

"Yes," Cat Blanc nodded.

"And you lost a bit of your human behavior," Cat Noir said.

"Unfortunately," Cat Blanc said.

"But you can still talk like a man," Cat Noir said.

"Of course. There hasn't been a single day I miss the love of my life" Cat Blanc said.