Chise's childhood friend. Her family has had close relations with the Umenomori family for generations. She seems to be a prim and proper lady, unlike Chise, and attaches "-sama" at the end of names.

In the anime, she apparently finds a passed-out Takumi in the mountains, and saves him from getting soaked outside in the rain. She pretends to be lost in the mountains, when in fact, she is very familiar with the area (it later turns out that the area belongs to her family), for reasons unknown.