Katou Koharu

Ui's mother. A happy housewife blessed with a kind husband and a lovely daughter and son.

She met the Sera family, her next-door neighbors, when they moved into their new house, and they hit it off because they are the same age. Since then, they have been good family friends.

She has long been aware that her daughter Ui is in love with Fuki, and secretly supports her. However, he does not really believe that she is aware of him as a member of the opposite sex.