Yoichi and the gang go to a hot springs for free due to Ibuki winning a prize at the festival last episode. The gang is overwhelmed by the grandeur of the hot springs. While the girls enjoy the hot springs and its facilities, Yoichi walks around the area and thinks about his former life in the mountains. Yoichi and the gang eat dinner with their host. The host say that ghosts in the cave behind the inn is the reason why there are no other guest in the inn. Yoichi and Ibuki volunteer to exorcise the ghost in return of the hospitality they received and they start walking to the cave. Chihaya relays this to Ayame, who feigns ignorance and walks out of the inn. Immediately after, Ukyo and his sister, disguised as the host, release a sleeping gas throughout the inn. Arriving at the entrance to the cave, Yoichi and Ibuki fall into a hole and both gets knocked unconcious. Yoichi wakes up and finds Ayame next to him, who starts seducing him. Meanwhile, Ibuki wakes up and sees Ukyo, who tries to rekindle their friendship. When Ibuki sees Ayame seducing Yoichi, she says that it cannot possibly be Ayame. Yoichi reaches the same conclusion but voices his reason that Ayame's breast aren't that big. Ibuki beats Yoichi. Sakon takes off her Ayame mask and releases another dose of the sleeping gas. Ibuki instantly falls asleep but Yoichi is able to resist the effects of the gas to an extent. Ukyo and his sister take Ibuki away, leaving Yoichi struggling to get back to the inn. When he gets inside the inn, Yoichi is faced with a series of assailents. Yoichi beats up all of them, leaving himself weak and open for Nuezume Jinjyuro. Ayame saves Yoichi and helps defeats all the remaining opponents. Ayame and Yoichi finds Kagome and Chihaya, wakes them up. Together they search for Ibuki. When they do find her, she appears to be hypnotised.
Ibuki a gagné un séjour pour sa famille, aux sources thermales, cette fois. Mais il s'agit encore là d'un piège fomenté par Ukyô Saginomiya, qui tente de conquérir Ibuki.
いぶきがお祭りの景品で手に入れた温泉旅行に訪れた与一と四姉妹。露天風呂に和風庭園、娯楽室に植物園、さらには水族館とテーマパーク並みに施設の充実した豪華旅館にとまどいながらも、旅行を楽しもうとする斑鳩道場の面々。ところが、その豪華な施設とは裏腹に、いぶきたち以外の客の姿は一向に見当たらず……。
Yoichi y la pandilla van a las aguas termales gratis debido a que Ibuki ganó un premio en el último episodio del festival. La pandilla está abrumada por la grandeza de las aguas termales. Mientras las chicas disfrutan de las aguas termales y sus instalaciones, Yoichi camina por la zona y piensa en su vida anterior en las montañas. Yoichi y la pandilla cenan con su anfitrión. El anfitrión dice que los fantasmas en la cueva detrás de la posada son la razón por la que no hay otros huéspedes en la posada. Yoichi e Ibuki se ofrecen como voluntarios para exorcizar al fantasma a cambio de la hospitalidad que recibieron y comienzan a caminar hacia la cueva. Chihaya le transmite esto a Ayame, quien finge ignorancia y sale de la posada. Inmediatamente después, Ukyo y su hermana, disfrazados de anfitrión, liberan un gas durmiente por toda la posada. Al llegar a la entrada de la cueva, Yoichi e Ibuki caen en un agujero y ambos quedan inconscientes.
