Umaimono wa Yoi ni Kue

In just one day, Torata has lost both his job and his home. He heads to the restaurant that he usually eats at, and out of the kindness of his heart, the restaurant owner, Ryuusei, offers him a live-in working opportunity. However, the pair share a bed, and every night they can hear Ryuusei's sister and her boyfriend going at it in the next room.