Haruka's family is now a rare three-generation household living together. Her husband passed away five years ago, and now she lives with her son, his wife, and her grandson. Her son has been on a solo assignment since last month, but he broke his leg, so his wife went to take care of him, leaving only Haruka and her grandson at home. Haruka, whose sexual desire has only accumulated since losing her husband, and her grandson, who is at the peak of wanting to have sex. What will become of the grandmother and grandson who are left alone under one roof…
Ruby
