Unlike Takiko, Mariko is quite normal, and gives off a more usual and fresh impression: she comes along in a very natural way. Quite mature, she knows how to accept everything; she is aware of her capabilities and faults all the time. Mariko is somewhat attached to her new friends, to the point of relying on them to save her lost friend. She is rather quite patient but at some times she has a tendency to over-react when she doesn't realize the current situation properly. Apart from her eloquent mental state Mariko is sunny, bright, and optimistic, even in the worst of problems. During the routes with everyone she always shows that she is a very caring girl; not only with her best friend Takumi, but also with the people present in whatever case.