Satoru is a Yandere he always calls ace senpai and he kills everyone ace gets close to out of jealousy and he asked ace out and ace agreed satoru knows everything about ace satoru knows that ace has white wolf ears and a white wolf tail but ace hides them with his invisibility and the day that satoru found out ace was sleeping and he tapped aces nose and his wolf ears and tail got revealed every time aces nose gets tapped while invisibility is on his wolf ears and tail gets revealed ace doesn’t let a lot of people touch him unless they are really close with him satoru steals aces diary only when ace is asleep reading it before returning it back