Alternative Title: TenSura OVA, That Time I Got Reincarnated as a Slime OVA, 転生したらスライムだった件 OVA
Release Date: 2019
Category: Anime Series
Summary: Bundled with the 12th and 13th volumes of the manga. The first OVA will be about the Sumo competition that is held at Tempest for the first time, suggested by Rimuru.