Kouki Amanogawa/Chronology

Biography
Kouki is your typical ikemen (handsome boy). He was very popular on Earth, but he didn't notice it. When he was 7, Kouki met Shizuku Yaegashi when he came to learn kendo at the Yaegashi dojo. Kouki was very popular in school and thought to be attractive by many of the female students, but none of them approached him due to him always hanging around with Shizuku. The two of them later met Kaori Shirasaki, and she would frequently hang out with them as well.

Kouki's skills in kendo earned him several interviews and magazine photoshoots.

When he first saw Hajime after he fell into the abyss he couldn't believe it was him.