Natsu Doki!
Description
Natsu Doki! is a Japanese erotic visual novel with fantasy elements set in the heat of summertime.
The player controls Shinichi Kuramoto, a young man who decides to go to the countryside to visit his grandparents during summer vacation. Among the first people he meets there are Mari Takanaka, who claims to have met Shinichi before as a child and developed a crush on him, and Shizuku, a mischievous tanuki spirit who disguises herself as a young girl. When Shinichi saves Shizuku after she falls into one of her own traps, she thanks him by giving him a mushroom that makes his penis swell up. The cure? Expelling the poison by any means necessary...