Unaired episode bundled with the limited edition version of the Yahari Game demo Ore no Seishun Love Come wa Machigatteiru. Kan Nintendo Switch/PS4 game from MAGES.

The OVA will be based on the Narumi Seo character map story event that was featured in the smartphone game in April 2018. Seo, who has a unique memory disorder, will appear alongside other heroes of the Seo Research Laboratory in the OVA.

After a covert mission goes wrong, Mobile Suit pilot Amuro Ray and his comrades are stranded on a remote island. The battalion was sent to a land called the Island of No Return to clear off any enemy forces, only to find a group of children and an enemy mecha attack. Now Amuro must find a way for them all to escape this mysterious land, but not before meeting a strange man—Cucuruz Doan.

The anime will stream online and focus on T.M. Opera O, Admire Vega, Narita Top Road, and other Uma Musume aiming to win the Classic competitions.