Two OVA episodes are bundled as DVDs with each of volumes 6 and 7 of the manga.
The first OVA is a prequel story written by the manga's author. Before the beginning of the main story, Rea and Chihiro have already met at a certain place - an outdoor hot-spring bath.
The second OVA takes place after the series (effectively episode 14). The Furuya family finds a mysterious young girl hiding under the household temple.
(Source: AniList.co)
Type: OVA
Genres: ComedyDramaEcchiFantasyHorrorRomanceShounenSupernatural
Studios: Studio DEEN
Sources: Manga
Status: Finished
Episodes: 2
Season: Spring 2012