Takatsuki Sawako

Yuuna's mother, who causes nothing but trouble. A wild, lewd, meddlesome mom.

Intending to support her daughter's love life, she's the one who proposed everyone get along and form a harem.

While doting on her daughter Yuuna, she also provokes her, saying she won't be beaten by a youngster (her daughter).

As a teacher and a mother, she gently guides everyone.

"Even a mother wants to be a maiden in love."

From official site