■Ai Kanazaki, a vengeance researcher for the murdered masturbator's wife's cooking

As a man and wife cooking researcher, he was well-received for his culinary skills and took advantage of his popularity to open a cooking class. Then, a male participant rushed to see the beauty of Ai and its rich body. One of them, Yamada, was so enthusiastic that he filmed videos during lectures that one day he forgot something and went back to the classroom to see Ai overlay with other students. Yamada, who took the opportunity to take a picture of his indulgently deceived milking habits, later pushed him to his home.