Hiiro Ryuugasaki 竜ヶ崎ヒイロ

A second-year junior high student at Tensei Academy. He currently lives with his grandfather.

He loves Shadowverse and possesses a resilient spirit that refuses to give up, no matter how dire the situation. He plays using the Dragon class.

Although he initially did not own a smartphone because his grandfather, Shigefumi Ryuugasaki, opposed the idea, he discovered one in his family's storehouse and finally began playing Shadowverse—something he had long wanted to do.