Sanada Yukikage (CV: Toriumi Kousuke) is the teacher of their class who’s very strict but deep down a really caring teacher. He’s obviously the main route cause it’s locked until you completed every other route.
Daisuke Anayama (CV: Tatsuhisa Suzuki) is a flirty medical ninja who has a flock a girls all over him. When he’s under the meromero jutsu he acts very kind, gentle, and protective.
Garaiya (CV: Hiro Shimono) is a Chuunibyou who’s lonesome and keeps to himself half the time. When he’s under the meromero jutsu he gets totally Yandere.
Yuri Kamakiyo (CV: Ono Yuuki) is a（むっつりすけべ）megane who’s strict and hardworking and, you guessed it, the student council president. When under the meromero jutsu he gets super do-S.
Kuroudo Kirigakure (CV: Takahiro Sakurai) is a top class ninja who strives to be perfect. He works his butt off enough that he can just sleep in class because he’s just that amazing. When his meromero jutsu affects him he gets all prince-like and spouts out all this hime dialogue.