Masakazu Ooi
    Masakazu Ooi
    Birthday: Unknown
    Family name: 大井
    Given name: 昌和
    Twitter: @ooimasakazu
    Website: http://d.hatena.ne.jp/ooimasakazu/
    Birth place: Kawasaki, Kanagawa Prefecture, Japan

    Ooi Masakazu is married to Ootsuki Yuuko. His father-in-law is Yoshizawa Yasumi. All three of them are manga artists.