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|Nicknames||Devil Twins (with Hajime)|
|Eye Color||Electric Blue|
|Status||High School Junior|
|Relatives||Hajime Izumino (twin brother)|
|Affiliations||Kakyoin Stride Club|
|Japanese Voice||Natsuki Hanae|
Ryo Izumino (五十公野 了, Izumino Ryō) is a second year student at Kakyoin High School and is one of the stride club's runners. He is voiced by Natsuki Hanae.
Ryo is a slender young man with short grey hair and electric blue eyes. His bangs are parted with one piece in the middle and the rest on the either side of his head.
He wears a dark purple jersey (with black covering the arms and "Kakyoin High School S.T." written in the middle) with a dark red neck warmer. He wears it with short black leggings and black-red running shoes.
Ryo has a dry personality. He is the younger twin brother of Hajime and are called the "Devil Twins". They're like two peas in a pod, while others say they are never apart. Both twins possess superhuman physical abilities and their accuracy in cooperation play is unrivalled. He was originally a circus performer.
Because both twins were circus performers, both have excellent parkour skills, but Ryo often runs directly behind Hajime in the order. Ryo is a faster runner than Hajime. He also deliberately gets close to the opponent to analyze their abilities before accelerating away to get to the next takeover zone with a decent lead. It is actually a ploy done by the team, but Ryo has done this more often than any other members.
|Honan||Riku Yagami • Takeru Fujiwara • Hozumi Kohinata • Heath Hasekura • Kyosuke Kuga • Ayumu Kadowaki|
Yujiro Dan • Riko Kawarazaki
|Saisei||Reiji Suwa • Shizuma Mayuzumi • Bantaro Chiyomatsu • Tasuku Senoo • Asuma Mayuzumi|
|Mihashi||Kei Kamoda • Yu Kamoda • Aoi Shima • Hisato Harigaya • Takeshi Eifuku • Nobuhiko Nagatsuka|
|Ichijyokan||Yuri Himemiya • Shiki Dozono • Kaoru Shishibara • Kiyoto Washimi • Arata Samejima • Tetsu Hachiya|
|Kakyoin||Tomoe Yagami • Amatsu Ida • Toya Natsunagi • Nanpei Aoba • Hajime Izumino • Ryo Izumino|
|Others||Joe Sakurai • Koichi Takahara • Sakura-chan • Kamon Kurobe • Diane Hasekura • Shauna Hasekura|
Katsuji Yamane • Kohinata Siblings