Aika and Shinichi were about to get married, so they both started moving into a new house to live together. Here the couple was helped by a very enthusiastic neighbor to clean the house, he was strangely kind. One day, Aika came to his house to fix the broken washing machine water line while Shinichi was away. The friendly neighbor invited her to eat a cake that was recommended to be bought overseas, and Aika felt sleepy after eating it and just wanted to lie down. It turned out that the neighbor had given up sleeping pills and the cake he had invited her to eat, and as a result, she was fucked by her perverted neighbor just before her wedding. Not only that, but he also constantly forced Aika into love, forcing her to have sex with him or he would tell everything to Aika's husband.