The mother-in-law, who can't resist her son-in-law's big penis every day, is tempted. (JUQ-304)

Natsumi Tamashiro, a mother staying at her daughter's and husband's house, lives a lonely life, never seeing her husband, but she's not the only one feeling lonely. She discovers her son-in-law masturbating alone late at night, and feeling she can't ignore it, she seduces him, unaware that it started as a way to satisfy herself, and she now constantly craves her son-in-law's enormous penis…