Two OVA episodes bundled with the 16th volume of the manga.
One of the included episodes is based on the story from the 15th volume, while the other contain an all-new original story.
(Source: ANN)+ More
Characters & Voice Actors

Kurama, Shinjirou
Supporting
Mikage
Supporting
Mizuki
Supporting
Mouri, Kirihito
Supporting
Narrator
Supporting
Numa no Himemiko
Supporting
Otohiko
Supporting
Urashima, Kotarou
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