Miina tends to have a hyperactive personality and is generally outgoing. Eventually, she develops feelings for Maiku but is afraid to act on them since she might in fact be his sister. She outwardly expresses herself as happy-go-lucky, although she is actually hiding things about her past. It is later found out that she is actually the stranger of the three, making Karen the relative. Knowing this she becomes hesitant when she is around Maiku, and even goes so far as to avoid him. In the last episode she attempts to leave by train back home, only to be followed and stopped by Maiku who says he would never want her to go and that she always welcome to stay. It is then that they share their first intentional kiss. She then tells Maiku that she wasn't trying to leave, but that she was told to come to the old train station by someone. Soon after all this Miina goes back to Karen and Maiku and she and Maiku begin to go out with each other.