AN: All Might has a family and he raised Nana's kid and has grandkids because I say so and he adopted Izuku who was abused and neglected by his mom. Just let Yagi be happy. Tenko made Toga and Dabi his friends. All For One is out there but very weak.
Sunshine gently drifted into the teacher's lounge as the staff ate and graded papers. Toshinori was a picky eater, Aizawa believed it with all his heart until Yamada started making airplane noises and feeding the kid. Toshinori ate a couple bites of his meal happily before making the hand sign for all done. Yamada cooed and swung Toshinori around a few times, rewarded by tiny little giggles. Thirteen tried to get Small Might to eat some more but startled Little Toshi, who's quirk suddenly activated. Black whips rushed out and wrapped Thirteen up before hurdling them through the window. Toshi looked more terrified then anybody else in the room, starting to cry. Aizawa used his quirk to erase the little one's quirk as the teachers heard some of Toshinori's bones break. Vlad and Aizawa paled while Hound Dog held the child close, letting Midnight soothe the child to sleep. Snipe hit the button for Recovery Girl and continued setting up the rest of Toshinori's crib, play spot, and asking Power loader to make special support items for Small Might. Thirteen walked back into the room, showing the damage Toshinori at this young age was capable of doing.
"We're doomed. All of us are going to die! Recovery Girl is going to kill us! We're in so much trouble!" Vlad started muttering as he paced. A few of the teachers were moving to the door to try to escape before Nezu and/or Recovery Girl appeared. Unfortunately, they did not make it. Nezu was there before they had made it past the sofa. A dark aura surrounded the principle, many of the teachers immediately pointing to Thirteen to avoid the principal's wrath. Recovery Girl arrived only moments after.
"What happened?" She asked, taking the baby from Midnight and healing everything, Small Might sound asleep.
"It was my fault. I startled him, causing his quirk to activate." Thirteen stated. Chiyo looked Thirteen up and down.
"You get to explain that to his family. Right now." She stated, walking out of the room and into an empty classroom where there was a group of people. Thirteen, Aizawa, Yamada,
Nezu, and and Gran Torino who showed up later than the others filed into the room. The staff members were shocked at the people in the room. Tenko, wearing special gloves, reached for his deaged grandpa.
"Look, he's so small!" Tenko cued, Toga and Dabi agreed also. Cathleen, the number one hero of America, smiled at how cute her papa was. Emily and her daughter, Melissa both nodded, taking pictures. Although David Shield was there, he was not allowed near his daughter Emily, his granddaughter Melissa, or his ex-husband Yagi. Gran took joy in glaring at the piece of shit that had broken Yagi's heart. Chiyo sighed, sitting by her husband, Gran. The man that stood and watched everything like a hawk was Yagi's oldest child, Kotaro (Nana's son), smiled a little bit as Yagi yawned cutely.
Izuku was nervous but he was currently being doted on by Cathleen's wife, Betsy. Sir Nighteye was glaring at Izuku, annoyed that his younger brother never texted him once he got to UA. He was nervous about his little brother's safety. Mario was looking out for him though. Yagi had helped him to adopt Mirio whose family was neglectful. Yagi had also adopted most of the Todoroki children. Honestly, it was overwhelming for the teachers to keep everything straight. Five more America Pro Heroes entered the room, two with small children.
"How's dad doing?" Seemed to be the common question. The grandchildren found the situation hilarious even though they knew the dangers lurking in the darkness. There was even food and coffee for this get together.
"What's Best Jeanist doing here?" Yamada asked, still in so much shock
"Yagi has an adoption problem," Nezu almost whispered to the teachers. They dumbly nodded. The sign at certain places in the school stating : 'Any unattended children or children who need a loving guardian will be adopted by Yagi and Might Productions' clearly weren't a joke after all. "He has been raising children since before he graduated from here. First it was just Kotaro. Than Cathleen lost her family in a car accident and Yagi couldn't bear to have her suffer through the foster system like he had. He got married to David who had a baby daughter, Emily. They got divorced. Yagi kept the children. Then he pretty much has had an adoption every year or so. He's the number one for a reason. Most of his kids end up as heroes or business people but all got licenses for underground heroics. At least four have been teachers. These are the only ones that could come in person. Just wait until the video call part shows up. Gran, you know the rules." Nezu stated, not unkindly. Gran nodded.
"I just wanted to make sure he was well." Gran left after speaking to Nezu. Aizawa felt rage at the reminder of what Yagi had suffered. He had a feeling none of the people in this room would have custody but they were planning something. The room fell silent as the oldest son stepped forward.
"Principal Nezu. We would like for you to know that all of us with hero licenses and support licenses are going to finish the fight and as such, only Chiyo, Sir Nighteye, Izuku, and the grandkids are not going to be fighting the battle. Is it possible for them and Sir Nighteye to keep tabs on dad?" Kotaro had cut strait to the point. Nezu looked sad, nodding.
"We will always be with him and he knew the risks. As long as he is safe, the risk is worth it. We have all already agreed on this after we were notified of his condition by Reverse." Cathleen's powerful voice held resolve. Nezu sighed.
"Who do you want to have custody of him?" Nezu asked. The group pointed to the black board was with the choices.  The one with the most votes was the Aizawa-Yamada family. Aizawa turned towards Yamada with a question in his eyes.
"We all know you two are married and are raising a child already. We thought i you ou two would be the perfect match for him while we take care of a group of villains and clean up the streets. We don't know how long it will last but we also merged most of our agencies into the Legacy of Hope and Peace Hero Agency. Please understand. He gave everything up to raise us and be a Symbol of Peace. We need to do this for him and for the future of heroics." Cathleen was nervous. All of them were nervous. Yagi had his quirk again and they knew that taking out the army of Nomu that awaited. All For One was planning to attack and soon. They'd be damned if they didn't stop him here and now. Aizawa and Yamada accepted and the adults that were not grandkids or Todorokis made their way off of the campus.