Yumisuke Kotoyoshi
    Yumisuke Kotoyoshi
    Alternate names: Hatahata Factory, ハタハタ工房
    Birthday: Unknown
    Family name: 琴義
    Given name: 弓介
    Twitter: @kotoyoshi_y
    Website: http://kotoyoshi.blog17.fc2.com/
    Gender: Male
    Blood type: A
    Doujin circle: Hatahata Factory (ハタハタ工房) with Renkin Jutsushi (練金術師)