The filming staff received a message from cosplayer 'RION' expressing a desire to appear in an AV. At the meeting park, a female player already dressed in cosplay attire and carrying a carry-case was present. Her outfit, emphasizing her rumored large breasts, raised the staff's spirits. Immediately showing her private parts and masturbating in the car, her protruding large buttocks were also erotic. On the balcony, amidst sounds that might be heard outside, she was groped, licked, and sucked on her large breasts, having raw sex with multiple orgasms and creampie. During group sex, she exchanged drinks, got highly aroused, was splashed with a copious amount of thick semen twice, and reached her climax with a facial semen pack.