I don't think he would kill himself since his family loved him so much. It's probably the bullies that pushed him and he fell down the fence or something on the roof.Didn't the original Takeru try to commit suicide? Where does this (apparently quite strong) so proud b come from? lmao. It seems to me(rn) that other than his name she didn't know him at all. :d
But yeah, this new girl can't say much when she ignored him for so long. She is an S-class hunter and should have been able to easily get into contact with him, even if it was just through the phone or something.