Yuragi-sou no Yuuna-san OVA Yuuna and the Haunted Hot Springs OVA
OVAs bundled with limited editions of the manga's 11th, 12th, 13th and 24th volumes.
The first OVA adapts the manga's 12th chapter.
The last OVA adapts the 99th chapter of the manga, "Noroware no Kogarashi," and the 141st chapter, "Giri Giri!? Onsen Happening."