>>50200813
I suggest reading his official record that they showed at the end of his death video https://milgram.fandom.com/wiki/Sakurai_Haruka
That said, it's basically:
>has big development problems
>parents go from frustrated to disnterested\
>he starts killing small animals so much until he gets caught
>actually euphoric his parents had to be dragged for his sake
>go out right after and kill a random kid at a festival

the murder of the kid leaves him super distraught and horrified, actually realizing what he's done. To quote from the report "he came to strangling another child's neck" or something. Some people say it's him choking himself. Or it's his little sister, but I can't remember where mentions her if he does at all.