Yuzuki would like to point out that she didn't intentionally mean to stumble upon the wreckage of the Shimura household. It just.... Happened. All she was doing was grocery shopping, she swears!

She just noticed a child sobbing, and found the absolute destruction that was once the Shimura household.

"Oh my...." She gasped, setting down her groceries.

She slowly walked towards the source of the sobbing, spotting the four year old there. She immediately noticed the blood and dust on his hands, her mind screaming that it was a quirk accident.

.... Her maternal instincts however, were now firing off, so logic and reasoning went out the window.

"Hello, child." She said softly, noticing the boy flinch and turn to her, looking terrified.

"S- stay away! Don't touch me! I'll kill you too!" He said, tears still slipping down his cheeks.

Okay, so this would be harder than she first thought.

"It's okay." Yuzuki said, slowly going to her knees, before sitting down. "I won't touch you. I'll be careful. Although, I don't think you'll need to worry."

The boy stared at her, looking suspicious.

"Don't worry, my child. I will not hurt you.... Am I allowed know your name?"

Not "I need to know your name", or "Can I know your name". Yuzuki knew children best.

".... Tenko." He slowly replied, sniffling. "Tenko Shimura."

Oh. Fuck.

"Hmm.... Would you like to tell me what happened, Tenko?" Yuzuki then asked.

".... No...."

"I see.... Well, seeing as how this is the first time you've ever used your quirk, you must be hungry." Yuzuki said, smiling softly. "That, and oh so very exhausted, my child. Would you like to come with me? I was just doing grocery shopping. I was planning on making some ramen tonight for dinner.... I'm sure my husband would be happy to have you join us."

Tenko hesitated.

".... Give me your hand." Yuzuki said, smiling warmly at him.

If she was right, it'd be fine. If not, well, she was fucked. She took his hand into hers, and a shudder ran through her body.

Just... Wow.

This child's quirk was literally trying to destroy her cells, and her body was just.... Refusing. It kinda felt like when someone tries to insult you horrible, but you just scoff and turn away. Her quirk knew that Tenko's could kill her, but it just.... Doesn't care.

She heard a sniffle, before Tenko went barreling into her arms, hugging her tightly. She just smiled, kissing the top of his head affectionately.

"There you are, my sweet boy.... You're safe now, because I am here."

.

Yuzuki walked inside, immediately being greeted by Kurogiri.

"Hello, madam-"

"Kurogiri." She said sternly, the twenty year old tensing.

".... Mother." He said slowly.

When Akihito has brought him to her years ago, she nearly killed her husband. He was sixteen then, and looked so.... Shaken. Of course, he was a nomu, but still. At this point, he was just unofficially adopted.

"Kurogiri, go retrieve your father. I have someone you both need to-"

A small thud met her ears, and she turned to see Tenko had dropped the bag he was holding, staring up at Kurogiri.

".... Hi?" Kurogiri said.

"Right. Tenko, this is Kurogiri. Kurogiri, this is Tenko." Yuzuki said, smiling.

Kurogiri slowly nodded, before retreating to go and retrieve Akihito.

Yuzuki looked down at Tenko, before saying "Do you want to help me make dinner, Tenko?"

Tenko nodded slowly. He followed her into the kitchen, Yuzuki handing him a pair of gloves with the middle and index fingers cut off. Yuzuki then placed a pot on the stove, filling it with water, putting a little bit of olive oil in it.

Yuzuki then dragged over a chair, placing Tenko on it, saying "Now, first up, we need to bring the water to a boil. While we're waiting for that, Tenko, would you mind bringing me another pot? It should be in the bottom cabinet next to you."

Tenko nodded, handing her a pot. Yuzuki smiled, kissing his forehead. She then filled the pot with water, placing it on one of the back eyes, before turning back to him.

"Now," She continued, handing him some eggs. "Can you count?"

"I can go up to ten!" He said proudly.

"Good job! Now, can you put four eggs in the pot for me?"

Tenko nodded, gently putting them in. They continued like this, Yuzuki giving him orders, Tenko happily carrying them out, the pair not even noticing Akihito and Kurogiri spectating.

"Isn't that...." Akihito trailed off.

"Indeed. Tenko Shimura." Kurogiri informed him. "Mother hasn't told me of how he came to be in her care, but.... He seems happy with her, and vice versa."

As they spoke, Yuzuki smiled down at Tenko, the boy returning the gesture brightly at her. Akihito hummed in thought.

"I suspect something must've happened. Yuzuki would normally inform me beforehand, so...."

"With all do respect, sir, I do believe that Tenko should.... Stay. You were looking for an heir, correct? Tenko's perfect for that, and you and I both know that mother won't part with him without putting up one hell of a fight."

Akihito chuckled. He'd definitely seen his fair share of times when Yuzuki went off on neglectful or downright abusive parents, sometimes returning later in the night to steal the children away. Every time, she'd vividly expressed how she would never want any children they'd have to go through the same thing.

So, he made a decision.

".... Kurogiri?"

"Yes, father?"

"How would you feel about having a brother?"

*Fast forward to a few days later....*

Yuzuki entered the office, Tenko in tow. Technically, it should be fine, since no-one had ever seen her outside of her villain costume, and her villain persona was much more.... Powerful. So, there she was, walking over to the desk lady, smiling boldly.

"Hello there! I'm here for my son, Tenko." She said happily.

The lady looked up at her, nodding.

"Of course.... Yuzuki Raimei, correct?"

"Mhm.... Now then, hand me the adoption papers."