Renmi, who admires the maid Reika, was masturbating while her longing for her grew deeper and deeper. Reika, recognizing Renmi’s genuine determination to master every aspect of maid etiquette, decided to provide hands-on, detailed instruction—using her own master, Reiji, as the living practice subject… After one full week of strict ejaculation control, Reiji’s cock is painfully swollen and ready to burst.