Oh god that slideshow of the bullying reminded me of Junko Furuta. For the love of everything good, DO NOT LOOK IT UP.
Suddenly the little sister's desire to kill those 7 people makes a lot of sense. If anyone heard Junko's
shitty eulogy about someone they loved and was expected to get over it, of course they would snap. Let alone, hearing it every day. Honestly, the sister's plan doesn't seem like enough punishment.