When Ryu shifted her stance to allow her to use her breasts to please his shaft while her mouth and tongue continued to please his cocks tip Seraph allowed himself to moan. She had done what he had wanted her to do with her freedom of movement, and without any mental or physical prodding from him. He still remained motionless, but this was her chance to prove her devotion to her master by pleasing him, her chance to prove just how highly she valued the taste of his seed. She could not prove that if he moved, and so he remained still.

As her breasts enclosed his cock and started moving in tandem with her mouth, one dropping down as the other rose up, Seraph's cock throbbed once before increasing the amount of pre-cum that was seeping from the tip. In addition to the increase in quantity it was also started to become closer and closer to the taste of his cum as the mana saturation increased. A non verbal clue that what Ryu was doing was on the right track.

As she continued to use her breasts, mouth and tongue to pleasure him Seraph's cock started to throb more often, and the amount of pre-cum seeping out increased each time. Soon that pre-cum turned into actual cum and as Seraph gave one final order his cum squirted out of his cock. Take it as deep as you can go.

As his cock began to throb and released more of the pre-cum from its tip, she was glad her work showed such a success after all. She couldn't help it, but her efforts rised as she was confident her master was about to reach his peak as she noticed the slight difference of taste in his cum as well. It got obvious she made something good, something that pleased him, she wouldn't leave him disappointed in the end.

Using every one of her benefits as a blessed young woman in some ways, his cock throbbed more often and the pre-cum got more and more. He gave her the final order before he suddenly released himself, just at this point she released her mounds and used her hands to pull herself on his member as deep as possible. She had been that subordinate that she managed to take his full length inside her mouth as his cum squirted inside her mouth, she still looked up at him with her subordinate face expression as her mouth got filled by it just before some went down her throat by his size.

Few and thin lines of his cum began to form on her chin as she willingly began to swallow the load he just released to gain access to her earlier task. Just a few drops dripped on the floor as she finished to consume his tasty cum and her tongue worked on his member as her head slowly bobbed up and down and held the suction to clean his member accurately as before. One hand moved up to him again and followed the movements of her head to suck him dry as ordered while she was about to complete her work. After a few seconds she released his cock and her head completely withdrew from it, she smiled gently and her eyes never left his as she spoke again with her soft and subordinate voice. Thank you for your gift, master, I really enjoyed the taste of your cock and cum.

As Ryu managed to take his entire length in her mouth Seraph smiled down at her while his cock spurted cum into the back of her mouth and down her throat. Her throat worked to swallow his cum, and for the most part was successful. A small amount did dribble down her chin and a a few drops fell on the floor, but in Seraph's opinion it only made her look more alluring.

Eventually his cock stopped spurting cum into her welcoming mouth, and when it did the suction provided by Ryu's mouth increased as she slowly pulled back. Her hand worked his shaft, trying to draw out the last of his cum while she sucked him dry. After a few more seconds her head drew back, his cock as 'clean' as it had been before he had released. Good girl Ryu.

***

For the remaining time in which Ryu had detention Seraph drilled his lessons into her, taught her various postures and positions, all the while teaching her the basics of the various ways she could please him. Every time he came he ordered her to clean his cock again, while repeating that the taste was the best she had ever tasted. If there was one thing he wanted imprinted into her mind, well other than that she was a slave, was that his cock, and his cum, was the best thing she could ever taste. He stretched her control over her orgasms, both in delaying it and forcing herself into one before it naturally came.

But all too soon, at least for Seraph, Ryu's allotted time in detention was over. While Seraph could easily have dragged it out longer he decided to give her a break and let what he had put her through settle down. It seems your time here is up. When I am not present you may orgasm as you wish. No telling anyone else what you are, or acting in a way that they will find out. They might get jealous and than I would have to split my attention to another. The last part was an order, and the threat behind it was one that played on her current opinion of him.

With that order given Seraph waved his hand and both of them vanished from the basement. Ryu would reappear in her dorm room while Seraph would be in his garden. Seraph figured Ryu had about half an hour before the effect of his mana wore off and her body collapsed from exhaustion. Seraph, on the other hand, did not need rest. Instead he spent his time calculating just how long to wait until he held her next lesson, and just how he would arrange it.