[Kuromogu Teikoku (Kurumogu)] Mahoutsukai to Ikenai Tomodachi

A diligent state mage with big breasts, glasses and a hefty futanari cock topped with big balls can't control her addictive ejaculation seal, pouring out semen even while still limp the moment she gets home. Her devoted naughty friend Nilphy, a dark-skinned elf succubus with huge breasts and voluptuous hips who lives for the mage's semen as a feast, begs to be called whenever the urge hits and promises to belong only to her. Their forbidden bond is supposed to cost the mage far more than her proud position if discovered, yet Nilphy's serious, hip-pounding pistoning feels so dangerously good that the mage risks becoming a willing sex addict just to feel her again.