Three brothers and lady.

Suzu Izukura, a young lady who is a bit of a slacker, blends in with her surroundings, works as a regular office worker, and occasionally attends blind dates, but her days are ordinary. Her secret wish was to have a love affair that would make her look like a fool at least once before she marries the man she is supposed to marry.
One day at work, Suzu has a near miss with Soichiro, a handsome man who knows that Suzu is a young lady. Soon after, the day came when her father introduced her to a forgiving husband. By chance, she runs into her childhood friend Shin again at that place. Also, Seigo, a healing younger man, lives in the apartment next to Suzu's....