This beautiful girl shows an abnormal reaction in the deepest part of her vagina, around her cervix. He thrusts his pistons at that spot again and again, and when she reaches a climax so intense that she can't focus her eyes, he ejaculates an incredible amount into her open cervix, finishing her off in one go. At that moment, she has an expression on her face that should never be shown to others, and she is no longer the Tsubomi you all know.