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 ghostly aura.

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

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