As the mother-son story unfolds, the son, Masaru, ends up living with his aunt due to adult circumstances. However, inside him, his feelings toward his mother gradually begin to change, captivated by her beauty. His mother's presence starts to radiate a new kind of allure, shifting his emotions into the realm of romantic desire. He begins to see his beautiful mother as a woman, intensifying his inner conflict. As their bond deepens, the story portrays the son's emotional transformation through the beautiful mother's B·I·R·E·I incestuous relationship. A tale where maternal bonds and the son's inner turmoil intersect.