Mondaiji-tachi ga Isekai kara Kuru Sou desu yo?: Onsen Manyuuki
English name: Problem Children Are Coming from Another World, Aren't They? OVA
Genres: Comedy, Fantasy
Type: OVA, Episodes: 1
Aired: Jul 20, 2013
Studio: Diomedéa
Source: Light novel
Rating: PG-13 - Teens 13 or older
Synopsis:
Izayoi, Asuka, and You have been invited to participate in a Gift-Game at a hot spring village to help the small community there find a new water source.

OVA bundled with the eighth volume of the light novel.