"I've decided to get married," said Mayu, his mother's best friend, whom he had had a crush on since childhood. Her sudden announcement of her marriage made her son Satoru unable to hide his shock. He tried to remain cheerful as he tried to spend his last night as a single man drinking away the night, but Kokoro was gloomy. However, there was no way he could say something like, "Please don't get married!"... Then Mayu, who had gotten his mother drunk, approached Satoru. "From tomorrow, I'm going to be a married woman... so, you see, I want to make some good memories with Satoru-kun before I leave." Satoru was confused as Mayu boldly pressed her big breasts against him, but...