There are nine men and a single woman called Chikan Jyu Nin Tai (the 10 molesters). They fulfill the dreams of clients who want to molest women on the train. They make a wall of their members so no one can see whats going on, and they use various molesting techniques to make the woman get off, after this the woman ends up with a 10,000 yen bill in their hand to be quiet about the situation. They bring the client to his dream world at the price of 1,010,000 yen, 100,000 for the ten members and 10,000 for a woman to shut her mouth.
Chikan Juunin Tai 4

Under the guise of anonymity on crowded trains, Chikan Jyu Nin Tai orchestrates lewd encounters where desire meets deception. Their client’s dark fantasies become reality as the ten men encircle a trembling woman, their expert touch teasing her body to surrender amidst stifled moans and hidden pleasures. When the act concludes, she’s left flushed, breathless, and clutching a 10,000 yen hush bill—their silent pact sealing her compliance for the price of illicit ecstasy.