Long, long ago, a woman who had coupled with a strange beast gave birth to a Saishi, a half-human half-beast creature, whose body was filled with venom. These brutal creatures were used in battle during time...

1-5) Renai Jikaku Shoujou The beautiful, strong Agatsuma Tamaki has a weakness~ his kohai* (*junior in age or rank), Sawamura Kei, who simply just drives Tamaki up the wall by his mere existence. On one fate...

1. Ringo, Ki kara Ochiru 2. Michi to no Souguu 3. Kanojo nano ni Otoko 4. Ore wa Ninkimono - sequel: Boku wa Ninkimono (Erotoro v.4) 5. Afterward and Omake