HKD-138 Haruka Higashi became a captive of her grandson's body

Haruka's house is now a rare family living together. Her husband died five years ago and now lives with her son, his wife, and his grandson. My son has been assigned to work alone since last month, but he broke his leg and his wife went to take care of him, leaving only Haruka and his grandson at home. Haruka who has lost her husband and has just accumulated sexual desire, and her grandson who wants to have sex. The fate of my grandmother and grandson who are alone under one roof ...