Birth date: March 21 1991 Age: 22 Tsukasa is the female protagonist of the Devils Line series. She is a firstyear graduate student at Keio University where she originally studied Humanities and Geography. She is a kindhearted human girl who falls in love with Yuuki Anzai at almost first sight. Despite the difficulties of being in a devil/human relationship she stays positive and is always trying to make it work. She cares about Yuuki and his suffering as a devil very much and is constantly looking for something she can do.