【Kill Time Communication】Monster Chair [Single Story].

A witch and a mysterious chair-shaped demon have tentacle cross-species sex! A witch at a magic school, Yukuna, was raped by a chair-shaped demon that she summoned one day, and it turned her into a more naughty and beautiful girl. Since then, Yukuna has been captivated by the demon, which she named “Sheet," and has become so obsessed with it that she masturbates during class while fantasizing about it. That day, Yukuna sits on Sheet-chan as soon as she gets home and looks forward to being tormented. As expected, she climaxes as usual as her pussy is attacked by the tentacles and she is drunk with fluids, but Sheet-chan’s tentacles gradually grow larger and larger.