Ep. 4: Mephisto, Amaimon, and Behemoth play video games while eating snacks in Mephisto's room.
Aired on September 21, 2011

4
In Mephisto's room, Mephisto, Amaimon, and Behemoth play video games and eat snacks. Mephisto focuses on the game while Amaimon constantly interrupts to comment on the food. Mephisto dominates the match, yelling at Amaimon to stop eating and focus. Amaimon wipes his dirty fingers on Behemoth, who is sleeping on the floor. Mephisto wins by defeating Amaimon's character and boasts about his victory. Amaimon then nibbles on Mephisto's specially designed pink controller. Mephisto becomes angry, causing Behemoth to jump on Mephisto and attempt to eat him from head to toe. Amaimon finishes eating the Mephisto Controller and tells his brother that it was delicious.
Episodes
- Ep. 1 · Yukio discovers a strange mole pattern resembling Hokuto Shichi Sei in a dream
- Ep. 2 · Yukio reflects on Shiemi's future health and family resemblance
- Ep. 3 · Rin hides his tail while Yukio warns him before a prank on Shiemi goes wrong
- Ep. 4 · Mephisto, Amaimon, and Behemoth play video games while eating snacks in Mephisto's room.
- Ep. 5 · Rin introduces Sugoro's details and his strict morning routine involving fringe management and early rising
- Ep. 6 · Shima Faces a Crisis and Calls Rin for Support During a Trial
- Ep. 7 · Izumo Feeds Kuro Cat Food Before Konekomaru and Paku Arrive
- Ep. 8 · Mephisto spends a day in dog form interacting with Rin, Yukio, and returning to his meeting spot with Amaimon.