There's a duel for a love potion on the line, and the whole Yuragi-sou crew are embroiled in a game of water gun survival! They'll be pitting their strength and wits against one another to win the ultimate wet t-shirt battle royale. Meanwhile, Kogarashi undergoes some changes to his psychic powers which will require him to be even more hands-on with Yuuna than usual...

There's a free-for-all duel with a love potion on the line, and the whole Yuragi-sou crew are embroiled in a game of water gun survival! They'll be pitting their strength and wits against one another to win the ultimate wet T-shirt battle royale. Meanwhile, Kogarashi undergoes some changes to his psychic powers which will require him to be even more hands-on with Yuuna than usual.

'" 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! "'

On a trip to the beach, Matora is taken out by a shady character, and things only get worse for our heroes from there. Kogarashi investigates the commotion only to discover his former master, Ouga Makyouin! She's arrived at Yuragi-sou to exorcise its resident ghost, and worse, she claims that Yuuna is actually an evil spirit hell-bent on destroying the planet! Kogarashi has to think fast to prevent Yuuna from being exorcised forever-that is, if he still trusts her.

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!

Even without making a sound, Takagi-san proves to be a formidable opponent! But her near-clairvoyant teasing won’t discourage Nishikata. With a surefire Rock, Paper, Scissors strategy and some divine help, he has to win once, right? And when he does, he’ll definitely impress her-not that he likes her or anything, okay?!

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?