Due to certain adult circumstances, son Yasuhiro comes to live under the roof of his aunt, Mayumi Azusa. Whenever it's just the two of them, he reveals a violent, disturbing side. Today, he's in a foul mood again, fixated on his mother Hitomi Enjo's skirt, demanding she wear an extremely short miniskirt. His tyrannical behavior pushes her patience to the brink. His demands grow increasingly extreme each day, escalating the tension in their relationship.