Synopsis: One day, Yamato, Mikoto and Takeru visit a village in the mountain for the training to be monster hunters. They have various hard trainings and finally become the monster hunters. But there is something wrong with Yamato’s body. His body gradually changes into a monster. What is happening to his body? Who can stop it? To save Yamato, Mikoto and Takeru make every effort to do so. What is the secret to Yamato’s body? What will happen to Mikoto and Takeru?
Alternate Names: Kairaku Henka Taimaroku, Inyouchuu Etsu, 淫妖蟲 悦～怪楽変化退魔録～
Aired: Jan 21, 2011 to Aug 19, 2011
Producers: Milky Animation Label, Studio Fantasia
Source: Visual Novel