Around the uterine ostium, the innermost part of the vagina where this older sister shows an abnormal reaction. - The piston that was intentionally aimed at the back is repeated repeatedly, and the uterine ostium that was made to fully open during the climax of the collapsed face like a laugh is suddenly struck with a ridiculous ejaculation. - At that time, she had her look on her face saying goodbye to her human world, and she was no longer Kanako-san, as you all know.