Mago no Kyokon no Toriko ni Narimashita ~Kazoku Ryokou de, Obaa-chan ga Fudeoroshi~

Tae, her daughter, son-in-law, and grandson visit a traditional hot spring to celebrate her 60th birthday. During the women-only bathing hour, the grandson accidentally enters the open-air bath. Realizing his mistake, he hides behind a large rock, only to find himself face-to-face with his naked grandmother. This nukige from Appetite focuses on the taboo relationship between a blood-related grandmother and grandson, featuring a male protagonist, a single older heroine, and non-virgin heroines.