Mako Oda's father-in-law has always been a heavy drinker, and both she and her husband were exhausted by his behavior, leading him to live alone for a long time. However, when they decided it was time to take care of him, Mako and her husband began living together with him again. Without alcohol, her father-in-law was actually a kind and considerate man. Lately, Mako had lost contact with her husband, and whenever she tried to get intimate, he always refused, claiming he was too tired. One evening, Mako and her father-in-law shared drinks together for the first time in a while, and both became heavily intoxicated. As Mako tried to stand up, her father-in-law nearly collapsed. Pretending to be concerned, he took advantage of her drunken state, undressed her, and had sex with her. The next day, filled with regret, Mako cautiously asked him about it, but he claimed to remember nothing. Yet deep down, he was aware of her feelings, thinking to himself, "Even though I don't remember, it was the first time I've ever made a woman climax so intensely..."