Based on the manga by Musubi Onigiri.
 
Ookami had her skirt swiped by the rumored "skirt bandit." Her teacher Akagashira happened to be passing by and came to Ookami's rescue. Akagashira took Ookami home, but Ookami had a real reason for bringing Akagashira there... "Stuck with a girl in a room with the lights out, I … can't help myself!" (Source: Anime News Network)

Based on the erotic game by Syoku. 
 
Zombie Attack at School suddenly happened. With the tentacles behind them, zombies catch their prey one by one and make them zombies too. At this point all they can do is survive in school and find out about the zombies from watching their behavior. 
 
(Source: Nekopoi and Has Been Translated)

Hazuki Mizushiro is a very popular teacher in school. One day, student Aoi gets enough courage to write a love letter to her. Much to his enjoyment, she responds to this letter.

A half-Vampire and half Succubus woman sent a love letter to humans to meet in the gymnasium. But until then, the woman asks for help to provide a life energy for food, The man also received it by giving it Sperm for nutrients. 
 
(Source: Nekopoi, translated)

Peak Hunt