When the students had been set off to find a place to duel and test out the field power bonuses, Korrin had had no particular place in mind. Considering how varied his monsters were, there wasn't really any one location that would have given him an advantage over the others. He went around looking for duels wherever he might find them, eventually ending up in, of all places, the library.
It wasn't completely asinine he supposed, there were people dueling in the halls, recroom, cafeteria, the different classes, and he did in fact find an opponent in the library. She smiled, hurrying over to him and challenging him. Between her initiating the duel, and her being the library deliberately unlike Korrin, he figured that she likely had some sort of strategy for the library. It would be interesting if nothing else.
He drew and took the first move, summoning Sexy Witch [4 stars, dark, spellcaster, skill: 1500, stamina: 1000]. His opponent, who's name he would later learn to be Nina, summoned Spectra [5 stars, dark, spirit, skill: 1600, stamina: 1200]. The monster that appeared took the form of a glowing purple spirit girl in a long flowing dress. Nina laid a face down and ended her turn rather than attacking, evidently smarter than most of the others attending the school, who would have gone for it and regretted doing so shortly after.
He drew, summoning Slutty Maid [2 stars, earth, slut, skill: 200, stamina: 800]. He gave a small curtsy upon her summoning, using her ability to place a pleasure token on Sexy Witch. He played a face down card and ended his turn. Nina drew, looking over the cards on the field for a moment before summoning Wight [5 stars, dark, spirit, skill: 1800, stamina: 1500]. The monster that appeared was tall, perfectly white skinned woman with dark black hair an a kimono a size and a half too small for her.
Nina played remove trap, destroying Korrin's face down Milking Bondage card, which would have made the rest of the duel a bit of a joke, then attacked Slutty Maid with Wight. The spirit girl pinned the maid down, forcing her into a trib position. Do to the difference in skill and stamina, Slutty Maid only lasted until after Korrin had drawn before cumming, letting out an embarrassed yelp of pleasure before vanishing and dropping his points from 3000 to 2000. As she did, she muttered, "I'm.. sorry.."
Nina's eyes widened when she heard this. "You can talk to them to?" She asked. Korrin smiled at this, "Yes, you speak with duel spirits?" He asked, Slutty Knight making her presence next to him known. Nina nodded with a smile, a tall spirit with fair that became smoke at its tips and a chest that might have had its own gravitational pull appeared next to her as she said this.
"Well, how about we make this a bit more interesting then?" Korrin suggested. Duels were set up so that if, at any point during them, a duelist came, they lost the match. If a duelist came from either a direct attack from a skilled monster or from being unable to stop from touching themselves during the duel, their points were dropped to zero immediately.
By this same rule, in official competition duels, if you could hold out and not climax, you could continue dueling even after your points hit zero, though the attacking monster would continue to pleasure you endlessly until you did get off, putting a bit more of a limit on how long you had to duel. But if you could get your opponent's points to zero and get them to cum, then you still won. Two championships had been won this way, one of which lasted ten minutes after both duelists' points were at zero.
So Korrin's suggestion that they both have the duel spirits pleasure them during their duel had some merit to it, and was not just him trying to be a pervert during a duel; which would be difficult considering the standards of a sex monster duel. Nina agreed to it, but she had a condition of course. If their duel spirits pleased them, then they might try and hold back in order to help their duelist. So for this game, they would have their duel spirits please each other.
The duel spirits agreed to this, Slutty Knight walking over and getting on her knees in front of Nina, the spirit girl-Akaname, doing the same for Korrin. On an agreed cue, they both started pleasuring the duelists, Slutty Knight burying her tongue in Nina's pussy and groping her ass, Akaname engulfing Korrin's cock and gently playing with his balls. Both duelists groaned softly, and the duel continued.
Korrin summoned Sleeper Slut [3 stars, dark, slut, skill: 500, stamina: 300]. She was short, with platinum hair and a glazed over look in her eye. Upon using her ability, Wight passed out, dropping onto her back, asleep. Sleeper Slut crawled over, groping the unconscious monster's body. As long as she was on the field, Wight couldn't attack or defend, and attacking Sleeper meant attacking her as well.
He sacrificed Sexy Witch and the pleasure token on her to summon Monara [6 stars, dark, slut, skill: 1700, stamina: 2600]. He sent Monara at Spectra, the two forming a floating sixty nine, which did nothing to make the joint pleasure the duelists were getting worse. Nina drew, but with each passing turn, it became clear that this battle was going to be decided not by skill, but by endurance.
Korrin and Nina did both try to win by skill, getting each other down to 700 and 500 points respectively before Nina cried out, cumming hard and drenching Slutty Knight's face. Korrin expected Akaname to simply stop, only for her to keep going, deep-throating him even, letting him know he could finish. Korrin groaned softly as he unloaded down the sex monster's throat. She gulped it down, smiling up at him before returning to her duelist, giving Slutty Knight's round rump a smack as they passed each other.
Slutty Knight blushed at this, hurrying faster back to Korrin, who chuckled and rubbed where the spot on her ass that had been smacked before giving it another, making her moan softly. "That was a close call," Korrin admitted, "Another thirty seconds and I'd have been done for." Nina chuckled, "Well that's something I guess. Oh well, guess I need to work on my endurance. In the meantime.. this was the last duel I need for the day, so do you wanna.. have a little fun with our spirits?"
Korrin smiled, nodding in agreement and walking over, following Nina to somewhere more secluded. In truth, he still needed one more duel, but figured that this was not something you came across often, and thus it took priority.