Artist, mangaka. The author of [[Shoujo Shuumatsu Ryokou]] and [[Shimeji Simulation]].

Pen-name: つくみず (Tsukumizu)
Old name: 月水 憂 (つくみずゆう, Tsukumizu  Yuu)
Circle name: 妹幻想自治区 (Imouto Gensou Jichiku)
tsukumizu yuu