Rui Hizuki releases her sexual desire! In this work, she releases all the pent up sexual desire to her heart's content. She treats the man like a toy and swings her hips up and down and left and right just to make herself cum! "Don't cum until I cum!" Rui's selfish grinding cowgirl position will have you masturbating while trying your best! Enjoy her as she cums in the best way she's ever done since her debut.