Frustrated by the heat, Haruo, tired of staying indoors, heads to the living room to complain to his mother Yumi. However, Yumi is already there, lying asleep with the fan blowing directly between her damp, sweaty thighs. Her appearance is incredibly erotic, instantly sending Haruo's mind spiraling into fantasy. When Yumi wakes up, Haruo desperately tries to suppress his earlier thoughts, but she asks him to fix the broken air conditioner. To do so, he has to support her body from underneath. As Yumi's sweet scent fills the air, Haruo's arousal reaches the brink of explosion...