Silk blindfold and wrists lightly bound in “mukai riku”—pure sensory surrender. Unable to see, every touch in “mukai riku” feels electric as she explores her own body. “mukai riku” captures the goosebumps rising when fingers graze inner thighs, the sharp inhale when they finally plunge deep. She writhes against invisible restraints in “mukai riku”, chasing friction until the blindfold is soaked with tears of overwhelming pleasure. The raw, shaking climax in “mukai riku” is the most erotic sight the series has ever filmed.