Aina Aoyama, with her delicate body that makes you want to protect her and her gentle way of speaking that tickles a man's heart, her first anal sex is 'unlocked' during filming!? The director remembered that during the previous shoot, his dick accidentally rubbed against her anus, and the masochistic Aoyama was feeling great. "I can't miss this precious opportunity," he plotted to revise the script while observing the situation during filming... Aoyama, who had no idea about any of this, said, "You're going to attack Aina a lot, right? I'm looking forward to it!" and called for an actor who likes anal. The actor, who thought he might be able to take Aoyama's anal virginity 'by chance,' began to caress her with great excitement. With an M-shaped opening and wide legs, he subtly observes her anus while checking her reaction. The actor, sensing the possibility in Aoyama, who exposes her unfamiliar anus and moans with a face full of shame, pushed his glans little by little into her anal entrance while thrusting from behind. When the surprised Aoyama instinctively called for a cut, she said, "I was about to have it in my anus... but my ass is still protected!" It seems her guard is still strong... The camera gets a close-up of the anus that is about to be unlocked!? The powerful footage that shows Aoyama's beautiful pussy and anus in close-up is a manifestation of the director's expectations. Aoyama, whose vision was blocked by a secret weapon eye mask and whose limbs were restrained, was more sensitive than usual and got very excited without worrying about the camera! She was given an anal massage in the manner of handjob, and when a toy was inserted, she had an anal orgasm! When the legendary actor's three fingers were inserted into her anus, she became limp with pleasure. Before she knew it, her anus was dilated, and the preparation was perfect... A second dick is inserted and combined into Aoyama's pussy, which is having sex in the cowgirl position! When the '2-hole simultaneous' insertion was successful, her moans echoed loudly throughout the studio! When two dicks are inserted and removed through a single flesh wall, her body, surprised by the pressure of her first experience, became limp... Aoyama, who knew the pleasure of anal sex that only those who have done it know, has climbed another step on the ladder of AV actress!!