The pleasant tingles Isaac felt from being more nimble again in his body was quickly overshadowed by the encroaching darkness that pervaded the library. Untold and forbidden knowledge of corruption no doubt contained in the many tombs that lined the bookshelves. Curiosity worming its way into Isaac's mind as he passed by the books. Maybe one would contain secrets that could help him understand and fight the corruption. Or another might teach him how he could feel even more pleasure, a dark thought crept up on his mind as distant moans echoed throughout the library.
That thought snapped Isaac out of the haze he was in momentarily. He realized that as his upper arms reached for a book that his lower had begun to pleasure his twin cocks. Now was not the time for such distractions, he was here to save his spawn Illvir. The loss of the connection between the two leaving a void that desired to be filled.
Darkness getting thicker as Isaac trekked deeper into the strange dimension. Wisps of dark tendrils beginning to surround him at just the edge of his vision. The shadow tentacles darting away to avoid his gaze when Isaac tried to look for them. "At least he choker of purity should protect me." Isaac said to himself not realizing the typical pearly white of the gem inside had taken on streaks of clouded darkness earlier.
Spotting a staircase down to an even thicker layer of darkness Isaac peered into the depths to spot any hint of where Ilvir must be. "Perhaps he went down here and was unable to find his way back up." He thought, as something compelled him to start walking down the heavy wooden steps.
With each heavy footfall down another stair the shadow tendrils grew bolder in their advances. The waning power of the purity stone and heavier darkness adding to their safety. About three steps down into the almost soupy darkness a gradual growing warmth passed through Isaac and flowed to his lions.
Several of the shadows following him slithering over his legs before moving upwards. Eventually sliding around Isaac's full balls as they sampled the pre that begun leaking out of each of his members. Issac continued treading down the stairs, a haze of lust clouding his judgement as the shadow tentacles grew more energetic. Sliding oh so teasingly across his rump as one teased the paladin's hole. Others content to slide up and down his cocks to get more of his essence.
Each step down into the dark libraries cellar increasing Issac's lust. Only a few steps away from the end however the gem in the choker of purity let out a dark red glow. The lust no longer fogging Issac's mind but now driving it with clarity. The gem still determined to protect it's bearer albeit with a more perverted purpose now.
Isaac looked down at the tendrils pleasuring him with a smile. "I can think of an even better use for you." Isaac said in the dark the soft purple glow of his eyes calming the squirming black tentacles of darkness. Then with a hearty moan Isaac grabbed two of the wispy shadows with his lower arms before sliding them up and down his cock tips. Heavenly sensations and pleasure tingling down Isaac's spine as the gentle bulges of the well lubricated shadows moved down his cocks.
With one more glow of the gem around his neck his glutes tensed up before sucking in the shadow that was teasing his rump, a mild feeling of fullness racing through him as it went up his hole. Isaac panted with hot breaths as his body began churning away and incorporating the dark intruders who threatened him. His already large sack growing even plumper as they were absorbed, gushes of pre shooting out of his leaking cocks as it happened. The rest of the shadow tendrils that had been following Isaac quickly started to realize the danger they were in as they fled. Their departure offering a mild improvement in visibility and light around Isaac in the basement of the library.