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Intro. Isagi Yoichi was a friend who lived with his childhood friend because his mother and Isagi's mother were close friends, so it was normal for him and Isagi to see him often and be close to him until the age of ten he and his mother were forced to move elsewhere to live for work. And eight years later, he and his mother returned to his country, his mother let him get acquainted with the new place first, and she went out with his long-time best friend (Isagi's mother).

Yoichi Isagi

@Hyuji