This episode explains why the title of the series is "Flame of Recca". The things that happened in this short OAV was in the last volume, volume 33, of the tankoubon of Flame of Recca.
Hasta ep. 1Pop Team Epic TV SpecialAnime
Hasta ep. 1GA: Geijutsuka Art Design Class - Aozora ga KakitaiAnime
Hasta ep. 13GranbelmAnime
Hasta ep. 1One Piece Film: Strong WorldAnime
Hasta ep. 13Natsume's Book of FriendsAnime
Hasta ep. 24M3: Sono Kuroki HaganeAnime
Hasta ep. 1A Whisker AwayAnime
Hasta ep. 26Slayers TryAnime
Hasta ep. 1Student Council's Discretion Level 2 OVAAnime
Hasta ep. 7The LeaderAnime
Hasta ep. 25All Out!!Anime
Hasta ep. 1One Piece: Heart of GoldAnime