The story revolves around Mizuki I, a character with a troubled past, who finds herself on a crowded train, surrounded by strangers. As she navigates the tight spaces, she begins to experience strange, unsettling sensations. It becomes clear that Mizuki I has the ability to sense the emotions and auras of those around her, making her acutely aware of the personal space of others.
Mizuki is a third-year law student. She doesn’t believe in vigilante justice—or didn’t. But Japan’s penal code on groping ( chikan ) is notoriously dependent on eyewitnesses and immediate confrontation, two things nearly impossible in a rush-hour train.