Akatsuki no Yona OVA
Yona: The girl standing in the blush of dawn
Akatsuki no Yona: Sono Se ni wa
Akatsuki no Yona: Zeno-hen
Yona of the Dawn OVA
暁のヨナ
The first episode adapts two bonus chapters from Mizuho Kusanagi's 12th manga volume, titled "On That Back" and "Kija." "On That Back" follows an incident at a hot spring hotel, and "Kija" depicts the past of the Hakuryuu Kija. The second two episodes adapt the rest of the Zeno Arc and were bundled with the 21st and 22nd volumes of the manga.
(Source: ANN)