JUR-492 I'm being tamed by my husband's younger boss and I'm his 'pet asshole slave'. Ryo Aiyumi

Ryo has been married to her husband, Tetsugaku, who works in sales at the same company, for five years. Ryo lives a modest but happy life. One day, while Tetsugaku is away at work, Tetsugaku's boss, Zao Ci, visits and tells her that Tetsugaku has caused a great deal of damage to the company due to a mistake he made at work! Confused, Ryo is approached by Zao Ci, who attempts to enter into a slave contract. Ryo offers her body for her husband, but the anal development that begins that day brings her pleasure and shame she has never experienced before... Gradually, her reason erodes, and Ryo repeatedly climaxes with her asshole agape...