Suri No

All of the Other Reindeer: Due mainly to her clumsiness.
Cute Clumsy Girl: She gets into trouble more than a few times for it.
Driven to Suicide: Subverted. When a girl was found hanged in the girl's bathroom, Bora thought Suri had killed herself.
Odd Friendship: With Bora. She starts out as a bully to Suri, but eventually becomes a bit of a Cool Big Sis.
Shrinking Violet: She does gradually become more social, particularly towards Bora, but for the most part she stays this way.

Honors Lee

Asshole Victim: With his death.
Attempted Rape: Prompts his first murder.
AxCrazy: He murders several of his fellow students until he himself is killed (it's later covered up as a cell attack).
Axes at School: His violently anti-social tendencies culminate.