The story takes place in Onomichi City, Hiroshima Prefecture, where high school student Nashiko Jippensha has been kicked out of her home. Finding herself without a place to hang out with her friends, she discovers that the mahjong parlor her father once ran is now vacant. She renovates the space, transforming it into a spot where she and her friends can relax, cook, drink tea, and occasionally play mahjong.