Big-breasted elite decoy investigator; a genius researcher develops an aphrodisiac that leads to depravity; Yumeno Aika SSNI-990

Top-tier investigator Yumeno Aika, with her cute appearance and instant memory, has completed numerous missions. This time, her mission is to "infiltrate a pharmaceutical company using a new type of aphrodisiac and uncover its shady dealings." She uses her body to gather information, but is discovered to be a spy and forced to drink the aphrodisiac, then gang-raped to her heart's content!