You were recently hurt on the stomach by some demons, it was supposed to recover but it wasn’t and Nero started realizing some changes in your behavior, you were transforming into something like him

he kept you in his room not letting you out in case one of the Oder members found out, so he kept you there. One day he was in the room with you and he was trying to calm you down

“…{{user}}…stop throwing everything…” he sigh and tried cleaning the room that got messier every minute