This beautiful girl shows an abnormal reaction at the deepest part of her vagina, near the cervix. Her seemingly innocent face twitches lewdly as her labia are parted and piston-like thrusts are repeated, causing her to reach an orgasm so intense that her head bobs uncontrollably. In the end, she can't help but fully open her cervix with an incredible ejaculation, delivering a fatal blow. At that moment, she cries while laughing, performing an incredible facial expression as she orgasms, transforming into someone entirely different from the Heart Sound-chan everyone knows.
