Seventeen-year-old Ray Kiriyama, who recently started living alone, is not anything special, except, perhaps, for excellent shogi skills. Despite his independence, the young man is still not emotionally mature, and teenage problems continue to haunt him in his daily life. Tensions with the foster family and difficulties in communicating with peers are just the tip of the iceberg. It seems that the chess "game of generals" is the only thing that he can devote himself to ... However, there is a strange family in this world, and the situation in this family's home is similar to a nuclear explosion. Noise and din, laughter and fun, and still meow - so loud that I want to screw up my eyes ... A small old house in a small town on a big river. A house in which once happened to be Ray . A house where he was met with smiles by three wonderful girls, three sisters - the elder Akari , the middle Hinata and the very baby Momo. the young man in this house? Will he forget about his sorrows within his walls? Or, perhaps, he himself will dispel the sorrow of the local friendly inhabitants?