This work depicts a peculiar relationship that begins when a pure high school girl, met daily on a crowded train, is witnessed being molested. Kawagoe Niko's performance is both sexy and adorable, excellently portraying the transition from initial resistance to gradual acceptance. The scenes with suppressed voices are intensely erotic, making the male actor enviable. While similar to past works, the latter half's loss of innocence and shift to an image club style feels fresh, offering a well-balanced experience. Enjoyable up to the final nude scene, a must-watch for fans!