Ataru was unable to truly enjoy his newlywed life, which should have been fulfilling in every way. The reason for this was the presence of his mother-in-law, Lina, who lived with him. Lina's body, facial expressions, and even her casual gestures all exuded a sensual allure, which always made Ataru Kokoro. As they lived together, his feelings for her grew stronger and stronger... Before he knew it, Ataru was so fascinated by Lina that he no longer even noticed his wife, and his feelings became so uncontrollable that they crossed the unforgivable line.