Shinkonchuu de, Dekiai de.

The high school student Sena can just survive with several jobs. When, as usual, she pursues her work as a cleaner, the young entrepreneurial genius Kei Ogasawara suddenly appears in front of her. Suddenly, he makes her a marriage proposal from the middle of nowhere! And though he faces her coldly, meanly, and ruthlessly, emotions in Sena quickly sprout up for him. But why did he just make her an application? Includes 5 side stories and a special "Konya, Sensei no Ude no Naka" chapter.