While her husband is on a business trip, Rumi struggles with her hikikomori son, Takuya. Her only solace is the existence of Goro, who works as a hikikomori counselor. One day, when Goro holds Rumi's hand and she feels her heart flutter, she can't help but give in to self-pleasure. Seeing this, Takuya's desires explode, and he attacks Rumi…
