In Tokyo’s busy transit system, a wave of coordinated groping incidents (chikan) has gone unreported due to victim intimidation. Rina, a former police detective, joins a civilian undercover volunteer group. Her mission: pose as a vulnerable passenger, identify repeat offenders, gather indisputable evidence, and coordinate with plainclothes police for arrests.

The significance of Rina's character extends beyond the confines of the series itself. As a representation of a woman who embodies both vulnerability and agency, Rina offers a powerful symbol of female empowerment. Her refusal to be bound by traditional expectations and her determination to explore her own desires serve as a testament to the complexity and diversity of women's experiences.

The game features high-quality 2D art, with characters animated using the Spine engine.

One of the most thought-provoking aspects of Rina's character is her willingness to confront and challenge social norms. As a chikan, she occupies a gray area between societal expectations of women and her own desires. This liminal space allows her to comment on the restrictions placed on women and the ways in which they are perceived.