Kouki Hanashima and Asahi Hidaka share a class-recognized love, although it's a relationship that seems to have its ups and downs. One day, out of nowhere, Kouki's older sister pushes her young infant son on the couple, saying that her duties as a stewardess requires her to be away for a month. Not only is the child named Asahi as well, but it seems that he's becoming a rival for the older Asahi!

Two adorable kittens and an older wounded cat have little adventures in the country home of their gay owners. The chapters focus on the littlest kitten until the end when the owners are featured in a chapter.