Based on the erotic game by Silky's.

Yusaku is heading home the first time in eight years. He's a medical student about to take on a summer internship in the nation working at his uncle's clinic. While on the train, he becomes smitten having a young woman sitting across from him, but struggles to summon the courage to speak with her. Whilst arrives in his hometown, he's reunited with friends from his childhood, and obtain shown gorgeous nurses, patients, and mysterious little girls. It is only just a few time before Yusaku happens upon the gorgeous woman he saw about the train.