Long post so all headcanons are after the line~ in a messy format.
WARNINGS: Talk about LGBT issues, blood, gender dysphoria, talks of panic attacks. If it bothers you DO NOT READ
Coming out:
Mom:
He came out to his mom really early, though she had a feeling for awhile. Once he moved to a new school (LSW) she made sure that all the teachers thought he was born with a male body. she would do anything she could for her little boy.
Saruhiko:
Saru found out at the worst possible time. Yata was sitting in class chilling, all of a sudden he paled and asked to go to the bathroom. 20 minutes past, Saru asked to go to the bathroom, thinking Yata skipped class. He found Yata in the bathroom, he was hiding in a stall and was on his PDA talking to his mom. He was telling her that there was blood in his underwear, that he was in pain, and he was scared. Saru put two and two together (they had health class a week and a half before) so he went to the nurse's office and got some pads.(in my school pads were in a bucket in the library so I'm going off that)
When Saru got back, he just put his hand under the stall door, Yata freaked the fuck out, like panic attack freaked out. Saru just kept saying stuff like “you are still a boy Misaki, just use these so you can go home or something” Yata did what he had to do and walked out of the stall. Saru watched him as he washed his hands. He then put a hand on Yata shoulder and just smiled. They both skipped school and played video games.
Mikoto Suoh, Izumo Kusanagi, and Tatara Tosuka:
Yata got badly injured in a fight, a slash on his back. Saruhiko never came on that fight, mostly because it was a small mission that didn't need him, so he was chilling at home and had no idea what was happening to poor Yata. Yata kept on saying that Saru could fix him up at home. Izumo was going into mama mode and would not let Yata leave until they checked out the wound. Izumo just grabbed Yata’s shirt and started lifting it up, Yata freaked out, he was so scared that his body exploded in fire. Izumo jumped back and everyone in the bar just stared at Yata. Mikoto just happened to walk in at that moment, he saw Yata, walked over to him and bent down so they were at eye level. “You okay kid?” was all he said, before shaking his head, of course, Yata was not okay. They got Yata to go to Mikoto’s room to calm down. Izumo, Mikoto, and Tatara came into the room not long after. Izumo tried explaining they need to see Yata’s wound, Yata really, really didn't want that. Tatara tried finding a way that yata would allow them to see the wound, asking if they only saw Yata’s back if that would be okay, he could have a blanket to cover up with. Yata was starting to shut down a bit, too much happening at once, Mikoto saw this and just plopped his favorite jacket on Yata’s head. “wear that” Yata just blinked, the others turned so he could take off his clothing. Just his top and chest binder, which he hid, and put the jacket on backward so that his front was covered and his back was bare. They saw some markings from the binder on his back but didn’t comment on it. That night Tatara looked stuff up and they found out what trans meant.
PRIDE:
Yata first went to pride with Saru, they both were really awkward about it, but after seeing some of the things being sold, they had fun! Saru started a tradition that any time they went, he would buy a shirt. One year it was “happy pride 20XX”, next was “Trans men are real men” he ended up with many, many shirts by the time he left Homra. He kept them, and even when he left homra he always went to pride. Yata and Saru became almost like an icon, just these young kids that grew up at pride. So they always went, just not together.
Homra went to pride a few times, they all got decked out in crazy colorful outfits. Yata had no clue that they were going to do that until he showed up at the bar!
After ROK Saru, Yata, and Anna had a nice day at pride. Anna wearing one of Saru’s old pride shirts, Yata shirtless because he finally got top surgery. it was a good time.
Other HC:
Saru saved up money to get Yata a chest binder and start T. Both being a surprise, though Saru didn’t act like it was. It was more “here” and throws the binder at him.
Misaki does get bad dysphoria, mostly involving his chest. He's not big, but he's not flat either, so it really fucks with him. Some days are okay, he can walk around his apartment topless no binder no problem. But there are days when he has to be flat, flat and everything bothers him. Saru always threw him a baggy sweater when that happens.
The name Misaki: he doesn't mind his name, though it is rather feminine. This is due to his mother, telling him “Born with or without a penis, you would have been called Misaki”.
Saru calling him Misaki isn't him trying to hurt Yata about gender, it's more the friendship aspect. Yata only lets close friends call him Misaki, Saru being the only one. So when he calls yata Misaki, it's him making a jab at their now gone friendship.
Sorry that this is a mess, I was dead tired when working on it.