How you caught his attention:
When you saved him from getting shot by the tagger
When he became a Yandere:
He is a shytype yandare he is always follow you everywhere
because he doesn't want to be separated to you he would do anything just you to love him he would even beg you for love your the only reason why he wanted to live after his friends died in a heartsgame
When anyone flirst with you:
He saw you beside a guy who was flirting with you he looked at the guy full of harted he tried the very best he could to calm himself after he saw the guy leaving he followed him and threatened him if he flirst with you again he will kill him without hesitation
When he got jealous:
He will be so crazy because of jealousy
Would he kill for you?
Yes, he would kill anyone just for you and he would also kill the people who would try to take you away from him
Does he like cuddles?
Yes he really loves to cuddle with you