Natsutsuki, a single mother, and Harumi, single and working from home, live next door to each other in an apartment in the suburbs. Their lives are more separate than if they were sharing a room, and they are much closer than neighbors. Exchanging side dishes, playing games after meals, and dealing with the little problems that come with being a single parent...it's helpful in many ways to have your neighbor as a friend. There are times when you're upset, with your divorced ex-husband and your mother urging you to get married, but with you by your side, you're sure to get through it. An irreplaceable relationship that is different from love. A heartwarming story of solidarity.