Beautiful detective Ellie is gang-raped by the weakest dad

Ellie is a beautiful elite investigator who has risen on her own in a society dominated by men. Ellie discovers a huge aphrodisiac drug company behind the aphrodisiac lord and infiltrates it as a researcher, and encounters old men who have been used as experimental subjects underground. He tries to save them, but the mastermind is used by the "apoliser that takes away his freedom and awakens pleasure" he has developed and is mercilessly raped by the boss. Takes an opportunity to escape, but he gangs up by the small old men and continues to cum until he breaks down, with an aphrodisiac...