This is the rumored big-breasted investigator

Shoko is an elite investigator with beauty, big breasts, and a mental strength that will never give in to anything. She has a history of being committed by her biological father and hates sexual crimes, and infiltrates a photoshoot where rape and human trafficking occurs. He is given an aphrodisiac and raped, but he is trained to resist aphrodisiacs and succeeds in catching executives from the undercover organization. But it was a trap of a grand plan. Betrayal rape from someone you trust, re-emergence of past trauma, repeated gang rape of aphrodisiacs... Elite beauty gets destroyed by aphrodisiacs and cock!