ACE OF DIAMOND OVA

First episode will be bundled with 44th manga volume. The limited-edition DVD will animate "Face -Kominato Ryousuke Special Bangai-hen-", which appeared in the Ace of Diamond Official Guidebook Ura and tells the "moving secret story of the Kominato brothers that cannot be seen in the television series." — Description from AniList community (anilist.co).