MDYD-879 — A married woman, Ayumi Takanashi, drops her keys.

Ayumi, who lives in an apartment with her husband, is unhappy with her life with him because of his selfishness. One day, she bumps into a young man named Suzuki who has just moved in next door, and drops her keys. At that moment, they fall in love at first sight. Unable to express her feelings verbally, Ayumi deliberately drops her keys to deepen her relationship with Suzuki. And so, the two become deeply involved...