Shion Yumi makes a surprise move to OPPAI and experiences internal ejaculation for the first time. Her natural breasts have grown from a 100 cm I-cup to a 102 cm J-cup, while the unfamiliar act makes her as nervous as she was at her debut. Bare penetration feels so intense that she cums with only the tip inside. When a massive hot load is pumped deep into her, she squirts and loses herself in repeated vaginal orgasms.