Youko is a kind and loving mother who cares greatly about her daughter, Sekai. She is always seen trying to support her to pursue her goals in love.

She can also be very passionate about her own love as well. She also seems to have a fetish for younger boys Sekai's age. Youko has short, deep brown hair much like Sekai. However, her hair is much straighter and falls down, as opposed to Sekai's which is curled from behind. Unlike fellow mothers Mai and Manami, Youko doesn't wear makeup or lipstic