Yuri, a young elite aristocratic ward who earned the title of Paladin. He is serious and kind but has no sexual knowledge and seems to be unfamiliar. Yuri once helped a succubus, Cordelia, from a freak show. She was so grateful and longing for Yuri that she took the exam to become a paladin's servant. And with the help of Yuri, she passed the test but she seems to be very hungry for semen because he endured the trial of "not squeezing for a year" Cordelia loves Yuri so much that she wants semen and tries to seduces him with her skill Will you fight for the paladin's will? Or do you lose to the temptation and indulge in love etch!?​