Someone (or something) is after Kogarashi, and it's up to the members of Yuragi-sou to protect him, each in their own special way. Can these romantic rivals work together? Suddenly, everyone except Yuuna is transformed into their child selves. As everyone loses their memories and Yuragi-sou falls into chaos...the assassin appears! But who is left to save Kogarashi?

'" The school festival is in full swing, and Yuuna is the star of the show. She may be a ghost, but that''s not going to stop her from appearing in the school play as the Little Mermaid. But soon after, the residents of the Yuragi-sou inn find themselves trapped in a magical, cursed board game. To escape it in one piece, they''ll have to stay on their toes: every single space on the board carries uniquely perverted consequences! "'

Kogarashi and the others are on a mission: to explore the Seven Wonders of Yukemuri High School! First up, a mysterious staircase that always seems to show girls' underwear. What strange powers are at play here? Then the gang takes off on a seaside adventure, exploring a secluded oceanside hot spring where Matora and Nonko prepare to finally throw down!

Homeless and haunted by ghosts, high schooler Kogarashi thinks his luck has finally turned when he finds Yuragi-sou: a cheap boarding house that was formerly a hot springs inn, now full of super sexy, scantily clad female tenants. If Kogarashi can use his spirit abilities to banish the ghost that haunts the inn, he can even live there rent-free! But when the ghost, a beautiful teenage girl named Yuuna, appears before him, Kogarashi takes pity on her and is suddenly not so sure about the exorcism. Will he help save Yuuna from becoming an evil spirit? And what supernatural secrets do the other boarders hold?

It's time for the school trip, and all the girls are vying to get close to Kogarashi. But he just wants to have a good time, and as he's a psychic trouble-magnet, he seeks it away from the gang. The fortune-teller Ryuzen uses her magic to show Chisaki that one day her wildest fantasies will come true! That is, if Kogarashi loses his powers and all the other girls sacrifice everything they ever had! The future is in her heart, and her hands!

'" Kogarashi can''t catch a break–after he rescued Yuuna from the clutches of an ancient dragon, the hot spring has a new resident: the dragon''s own handmaiden! She''s bent on nothing less than making Kogarashi the father of her child. Somehow, in the midst of all that, he has to find time to investigate a haunting…at an all-girls'' school, no less. Beautiful girls and supernatural situations are never far away at the Yuragi-sou inn, and Kogarashi''s got to set spirits to rest, even if he never gets any himself! "'

CHILD’S PLAY! Someone (or something) is after Kogarashi, and it’s up to the members of Yuragi-sou to protect him, each in their own special way. Can these romantic rivals work together? Suddenly, everyone except Yuuna is transformed into their child selves. As everyone loses their memories and Yuragi-sou falls into chaos…the assassin appears! But who is left to save Kogarashi?