Ever since childhood, Hiroki was doted on by his older sister, who dressed him in girls' clothes, leading him to believe he was truly a girl. Growing up with this identity, he developed sexual curiosity toward men and even made advances toward a male assistant director who entered the dressing room. His blowjob scenes are intensely passionate, and during the masturbation segment, he receives a handjob from a male performer before climaxing. In an erotic threesome scene, he is playfully teased by multiple male performers, gradually heightening his pleasure to new extremes.