JUL-179 Mito and Yamagishi live in the same neighborhood. Once a month, they hold a home party together, drinking and chatting about life. A few days later, Aika argues with her husband and wants to return to her parents’ home. Kana repeatedly tries to persuade her to stay and think things over. At the same time, Aika’s husband develops a high fever, so Kana stays to care for him. Kana’s gentleness touches Aika’s husband, and because they haven’t had sex in a long time, he can’t control himself and takes her. Kana’s husband witnesses this through the window and decides to have sex with Aika to get revenge. Not stopping there, he forces his wife to have sex with him right in front of him, intending to have sex with Aika in front of her husband as revenge. But they seemed to gradually become engrossed in the excitement of having sex together, so their relationship grew closer, and later, once a month, they would have sex together to strengthen their bond…
