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|Status||High School Freshman|
|Affiliations||Kakyoin Stride Club|
|Japanese Voice||Tetsuya Kakihara|
Amatsu Ida (維田 天 Ida Amatsu) is a first year student at Kakyoin High School and is one of the stride club's runners. He is voiced by Tetsuya Kakihara.
Amatsu has bright magenta hair with a strand coloured black behind his right ear and silver eyes.
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/magenta t-shirt. He wears it with black track shorts and running shoes.
As Kakyoin's Ace (anchor), Amatsu is arrogant and self-centred. However despite having a big mouth, he is backed up with his abilities as the strongest runner. He grew up in America and is bilingual, so his language sense is hard to be understood by the general public. He often communicates with Toya Natsunagi. While he and Takeru Fujiwara were not put as the anchor for their Time Trial race, he still exhibited great acceleration and speed, and leaving Fujiwara behind as Kakyoin annihilated the course record for the Sapporo Dome Time Trial.
He was a dominant anchor, but has given up the position to a more experienced Tomoe. He has great acceleration and speed, but average parkour skills.
|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