Owari: Eye gore, too much blood
Tsumiki: Rape, noncon, rape jokes
Ishimaru: Rape, cannibalism (extreme gore a bit iffy)
Oowada: Not triggered by, but is uncomfortable with detailed gore
Komaeda: wrist trauma, veins
Mioda: Emetophobia (vomit), drowning, abusive relationships
Kirigiri: Cannibalism, trypophobia