Shadowverse

is a free-to-play digital collectable card video game developed and published by Cygames. It was released for iOS and Android devices in Japan in June 2016, and by July was the most popular mobile collectable card game. Mac and Windows versions were released in October 2016 and began international promotions since 2017.

An anime series adaptation by Zexcs premiered on April 7, 2020. A Nintendo Switch RPG version based on the anime, Shadowverse: Champions Battle will launch in Japan in 2020.

Plot
Our protagonist, Hiro Ryugasaki is an ordinary middle school student at Tensei Academy. Through a strange incident, Hiiro obtains a mysterious smartphone. The smartphone has installed the popular digital card game "Shadowverse." Through the game, Hiiro meets rivals, participates in tournaments, and forms bonds with others, and continues to "evolve".