“All-girls Dorm with Outdoor Bath: Hot Springs”
“Rotenburo tsuki no Joshiryō: Onsen na” (露天風呂つきの女子寮 温泉な)

15 years ago, Keitaro Urashima made a promise to a girl,whose face and name he can’t remember, that they would go to Tokyo U together. Now he is trying to fulfill that promise more than ever. One day he goes to visit his Grandma Hina and ends up running the Hinata Apartments where all the residents are over-the-top girls.