One day, the long winter is coming to an end, and the breath of spring is beginning to be heard.Takeo returns home in a thick coat and is stunned when he sees his mother, Sumika, in light clothes.She can't help but urge him to wear her clothes, but Sumika insists on one point, "It's warm, isn't it?"The next day, Takeo looks down at her mother who is wearing light clothes and doing housework with her nipples showing through.However, Sumika doesn't care about Takeo's gaze at all, and she says that she will go shopping for her in that appearance...