Ch. 1: Koichi murders Takashi's girlfriend and to get revenge Takashi starts living with him and treating him with care
Ch. 5-5.5: During a zombie apocalypse, Haruya and his childhood friend Souichirou try to fight their way through and survive. However, Haruya ends up getting cut by one of the zombies.
Ch. 2: While being painted by art student Miyamae, teacher Hitsugi has strange daydreams of being violated by him. Miyamae becomes crazier as more time passes.
After transferring to a new school as the substitute for a missing teacher, Japanese teacher Reiji begins experiencing many strange occurrences, such as seeing strange dreams, ghosts, and even uncontrollably attracting the men around him. Reiji ends up having to involuntarily rely on Kyouichi, a problem student rumored to be the cause of the teacher's disappearance, whenever the strange things happen.
Pg.113-142: On a business trip, Hideto dies in a rockslide and becomes a zombie. After returning to his lover Wataru, Hideto must try to hide his condition from him
Ch.6: Whanting him to become his successor, a doctor gets his son Keiri hooked on dissection, much to his wife's horror. While the doctor and his assistant Tanizaki are making plans to take Keiri away, his wife will do anything to stop them
Ch.8: While snooping, Nakashima discovers his teacher's disturbed interests of stalking and mutilation
During a zombie apocalypse:
Ch.1: While trying to survive alone, William was kidnapped by Adam and has been unable to escape. Adam has a secret reason for keeping William
Ch.2-3: Linus and Conor survive by grave robbing and eating the fresh corpses. However, Linus refuses to acknowledge Conor has already turned
Ch.4-5: While fleeing, journalist Raymond ends up at a lake house with Lawrence, a childish boy waiting for his brother's return
Extras
Jikan Akima Jinbutsu