Taichi and Kyohei, classmates at university, shared one thing in common—they were both virgins—and quickly became close friends. With graduation approaching and neither having lost their virginity, they decided to take one final trip together as students and headed to a hot spring inn. There, they encountered a mysterious, free-spirited older woman who suddenly appeared and happened to be staying at the same inn. Known for her fondness for virgins, this bold and seductive lady began to stir emotions within the two young men, gently unraveling their composure in the warmth of the tranquil setting.