Height 165 cm Takemichi learns that the girl he dated in middle school—the only girl he ever dated—has died. Then, after an accident he finds himself in a time leap back to his middle school years. He vows to change the future and save the girl, and to do that he aims to rise to the top of the Kantou region's most brutal delinquent gang.

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After the fight with Valhalla he becomes the First division Capitan of Toman.

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He later became the eleventh President of the Black Dragons as well as the captain of the First Division of the Tokyo Manji Gang, and a member of Brahman.

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Takemichi is also the president and founder (with Chifuyu Matsuno) of the Thousand Winters (later renamed as Tokyo Manji), created to defeat Kanto Manji.