A cold concrete floor.... Walls on all sides.... And a mahjong table... A man who lost his memory wakes up in a dungeon... An unprecedented mahjong mystery!

Ihara Yuuichi is stepping his foot into the professional world at the age of 24, but he is struggling to fit in. He has never fit in anywhere because of his brutally honest personality, where he can't even tell a white lie to make someone feel better. He promises himself that as the new employee to this company, he will be a different Yuuichi and consider other people’s feelings, but, sometimes, things just don’t go as planned.

From DrCoke at [MangaHelpers](https://www.mangaupdates.com/groups.html?id=1011): Yoshida Harumi is an unstoppable saleswoman. Once she sets her sight on her "target," she will devise some of the most devious and effective traps to force you to buy her useless merchandise. Her current target is the poor sap who resides as the president of a small company he inherited from his father. Will he be sucked dry by Harumi's contracts? Or will he be able to protect his company?