Seina Katsuki, 20 years old. She was an athletic girl who played handball in high school. Her trademark is her big round eyes! The size of her breasts... G cup. She was worried about people seeing her breasts, and they got in the way of her exercise... During her school days, she used to crush her breasts with a cloth or a corrective bra. She was not a hidden big breast, but a "hidden big breast"! She explored the studio, tried making lotion, and shyly showed off her breasts in front of the camera for the first time! Her pointy triangular breasts with a little thin flesh on her décolletage are erotic and cute! She also showed us her pussy, and we checked her sexual sensitivity both above and below! She was a squirter...!? She still has a Rina personality, and her modest moans are gradually blooming. This active female college student makes her AV debut, completely erasing her complexes!