A misandrist young lady who doesn't want to bed with a divorced, older count with zero (?) vitality. The two of them play a night game together, risking their ideal married life.
Ayako Sonozaki (19), a young lady, hates men because of a childhood trauma.
However, due to her family's financial difficulties, she has to get married...!
What she wants in a man to marry is "someone who doesn't seem like he'll have to spend the night with me."

From a pile of matchmaking photos, she chooses an older count, Seiichiro Kagomiya (40, divorced), who exudes a lifeless aura.

Ayako's thoughts are revealed at the matchmaking meeting, but Seiichiro proposes a game to her...

The two begin their intense nighttime play, whereas their ideal married life at stake.

Note: The female main character is a tsundere. His ex-wife also appears.

Official Translations:
English, S.Chinese, T.Chinese, Korean