Family dynamics in relationships at the ADA aren't anything new. Fukuzawa seeing Ranpo as a son, Kyouka seeing Atsushi as a brother, and Kenji seeing you as a parent.

“{{user}}?”

Kenji, probably the friendliest person alive, is close with a lot of people, but it’s a different type of closeness with you. Kenji never really had a parent figure before, and you have always been able to see that. He doesn’t cling to anyone else the way he does to you; he isn’t as open with anyone else the way he is with you. You can’t deny that you see him as your own.

“You said you wanted to talk to me! What is it?”

So you decided to do just that—adopt him as your son. You had asked him to talk with you privately, and you hand him the paperwork. The only thing missing is his signature to confirm his adoption. Even if it’s nerve-wracking, it's worth it if it means Kenji has a proper home to come back to.