Hiro and the Black Dragon Knight
"Heero ... Battle with me" Heero confronts Lowen in a lost world. Why are you here and why did you meet? Because I don't know, I will battle. "Let's do it, Lowen!
Aired 12/01/2021EP 38 - Hiro and the Black Dragon Knight
2020
Shadowverse
The hottest battle is about to begin!
While attending Tensei Academy, Hiiro Ryuugasaki ends up acquiring a mysterious smartphone. It comes installed with the popular card game, Shadowverse! Meeting new rivals, facing major tournaments, forging bonds with friends... Shadowverse leads Hiiro to all sorts of new experiences, all that serve to "evolve" him...
(Source: Crunchyroll)