PARATHD-2898 My cute stepsister who goes to art school asked me to be her nude drawing model, but she kept staring at my dick so I got hard and ended up raping her.

▽The brother, reluctantly becoming a nude model at the request of his art school sister, gets hard as she sees his dick! He thinks he's going to have sex with her... but then his girlfriend appears. What will be the end of this love triangle? ▽The brother, reluctantly becoming a life drawing model at the request of his art school sister, gets hard as she sees his dick up close! His sister is pleased and the atmosphere becomes erotic; he thinks they're going to have incestuous sex... but then his cohabiting girlfriend appears! ◆His older girlfriend, who is more lewd than usual because she's conscious of his sister, and his sister, who seduces him cutely by taking advantage of her girlfriend's openings... How will the brother's heart, swaying between the two women, and the end of this love triangle be?