Now.

Mizuki grabs his wrist with her right hand—firm, unyielding. Before he can pull away, she presses the air horn directly against their clasped hands and blasts it for one full second.

For three days, she couldn’t eat. She replayed it constantly—the lack of control, the violation, the cowardice of the perpetrator. But more than that, she replayed her own inaction. That was the real poison.

She named him “Weasel.”

She doesn’t press charges. She doesn’t have to. His face—already circulated on five Twitter accounts before the train reached Ueno—does the payback for her. Later that evening, Mizuki writes in her journal: “They say revenge is empty. They’re wrong. Revenge is a tool. Not for satisfaction—for restoration. Today, I took back my morning commute. I took back my voice. And I let a coward know: the crowd is not his camouflage. It is his cage.” She deletes the audio file after making one backup for Haru. She doesn’t post it online. The public shaming, she decides, is enough.

Haru, the transit cop, steps out of the adjacent car, ticket punch in hand. “Sir, I need you to step off at the next station.”

Weasel’s face goes white. He tries to yank his hand back, but Mizuki has it locked. She doesn’t shout. She speaks calmly, loudly, clearly: “This man has his hand between my legs. Does anyone have their phone out? Please record. His name is Tanaka Kenji. He works for Mitsuwa Logistics. He has a wife and two daughters. Now everyone can see what he does at 8:17 AM.” No one looks away. Phones rise. Weasel—Tanaka—stammers, “I didn’t—it was crowded—”