Yuragi-sou no Yuuna-san OVA
Japanese title: ゆらぎ荘の幽奈さん
Alternative titles: Yuuna of Yuragi Manor, Yuuna and the Haunted Hot Springs
Type: OVA
Source: Manga
Episodes: 4
Status: Finished Airing
Aired: Jul 4, 2018 to Dec 4, 2020
Duration: 23 min per ep
Rating: R+ - Mild Nudity
Studios: Xebec, Signal.MD
Producers: Shueisha
Genres: Comedy, Romance, Supernatural, Ecchi
Themes: Harem
Demographics: Shounen

Bundled with the 11th, 12th, 13th and 24th volumes of the Yuragi-sou no Yuuna-san manga. The first episode will adapt the manga's 12th chapter. 

The last OVA will adapt the 99th chapter of the manga, "Noroware no Kogarashi," and the 141st chapter, "Giri Giri!? Onsen Happening."