Yui, who was forced by her father to marry a wealthy man, was tired of her newlywed life, with money but no love. To escape from the cramped life where she couldn't defy anyone, she visited the house of Abe, her father's best friend, who had been looking after her since she was a child. The apartment was just as rundown as ever, but it was a comfortable place for Yui, who had no place to belong. And so the strange cohabitation life of a man and woman with such a large age gap began, but Yui had been hiding her passionate feelings for Abe since she was a child...