Marina has lived with her daughter and her husband for a year. Marina has a happy and peaceful life except for one thing: her husband is no longer interested in having sex and she has not been able to satisfy her sexual needs for a long time. Therefore, Marina regularly exercises to dispel her loneliness. And once accidentally discovering a giant thing between Yasuo's groins, discovering that they had not had sex for a long time, Marina made a bold decision. That is to seduce her son-in-law to have sex with her! She continuously exposed her plump body in front of Yasuo, causing the sexual need that had accumulated for so long in his body to explode. He could not resist the provocation of this extremely seductive mother-in-law!!!