In the quiet stacks of “yui arioka,” she hides behind ancient books, skirt lifted, fingers buried knuckle-deep in her dripping cunt. The risk of being caught makes her even wetter for “yui arioka.” She bites her own arm to muffle screams as she rubs her clit furiously with the other hand in “yui arioka.” Her pussy makes soft wet sounds that seem deafening in the silence of “yui arioka.” Suddenly she cums hard, thighs clamping around her hand while juices run down her legs in “yui arioka,” leaving a forbidden puddle on the library carpet that will confuse the next patron who finds it after watching “yui arioka.”