It had been an entire week since his infection, the black Grimmcyte virus covered half of the right side of his body, Grane was all by lost in his own subconscious, the dominant force this time around was his nameless Grimm side. The virus left its mark on Grane, leaving half of his body black, his white hair slowly turning into an ebony shade and his right eye to a crimson color. His mind had finally succumbed to the sexual craving he was feeling, he began hearing girls in the distance speaking then used his enhanced speed to make it over quickly. Witnessing his girlfriend, Yang Xiao Long talk to her group but also going off alone he thought this was the perfect opportunity to start his plan. Being night and also inheriting Grane's Aatu training he had great stealth and tracking skills, finding Yang on the roof where Jaune and Pyrrha skipped practice today, holding the metal railing and sighing "Grane...where are you?" she asked any being who would have the decency to give her a location on her beloved.
"Here" Grane told her and moved behind her quickly before Yang turned around and grinned with her eyes closed "Gran-" she was cut off with a rough kiss from Grane, however he slid his longer tongue into her mouth while Yang wrapped her arms around his shoulders. "G-geez Grane you missed me huh?" she asked then squeaked noticing his different appearance "G-grane?".He smirked turned her around, making her bend over the railing while she struggled."S-stop this isn't you!" Yang said and put her hands on his strong chest, trying to get away but his tendrils which came from his back and wrapped around her hips kept her from any escape. In a flash he took out his large 10inch member, rubbing it between her buttcheeks making her shiver. Yang moved her wrists around but Grane grabbed her wrists and used his tendrils to rip a hole in her shorts, big enough for his rod to pass through, squeaking in surprise. Before she could protest his length was shoved into her, she screamed into her arms as she covered her head, cumming instantly from size of his girth, she wasn't a virgin as she always acted slutty for Grane. He smirked and began thrusting into her with blinding speed, turning her head to him and tongue kissing her "S-stahp" she couldn't handle the pleasure, her thoughts racing, she was aroused because it was Grane but also scared because it wasn't him at the same time. They tongue kissed each other, their wet tongues rubbing together while he hit her g-spot and made her belly get bumps, making her release every 10 thrusts.
Eventually he released warm, white fluid into her making her moan out loudly, but he wasn't done. He picked her up and onto her ass and head with both his human hand and clawed grimm hand, Grane made her bounce on his cock as his tendrils rubbed themselves around her asshole before forcing themselves inside her making her scream but he silenced her with a wet kiss. Grane's pelvis collided with hers as she drooled, moaning but still resisting, her wrapped arms around his neck. He made a tendril slip inside her mouth, all her holes filled he didn't need to hold back so with all his might he made himself and the tendrils move at intense speed. Yang clenched her fists trying her best to break free though it was no use, her mind was nearly broken until she caught the sight of a golden hair falling. Grane, not noticing this he continued to ravage her mouth, ass and pussy with his length and tendrils. He took out her breasts then began sucking them before his length twitched and so did his tendrils showing he was close to releasing. After several thrusts Grane finally shot a bathtubs worth of cum into her, her belly growing and her mouth overflowing with cum. Thinking she succumbed to the pleasure he slipped the tendrils out of her and lowered her head but caught the red eye coloring too went sent flying into the wall with a ember punch and Yang smirked, pushing her belly down forcing the cum outside her "Now you're gonna regret it big guy" Yang told her boyfriend then got on her knees, shoving his length down her throat until she couldn't no more and a bulge was showing. She began giving him an amazing blowjob, her suction power immense after all the practice with Grane. Being momentarily dazed, Grane couldn't fight back and drooled as Yang began using her chest on his snake. Yang moved hard and fast as her anger fueled tactics added with her lustfilled personality gave her a temporary advantage against him. She laughed and made him cum, swallowing nearly everything before showing the dazed Grane how much was left before making a bubble from the cum, popping it and swallowing the remainder.
After her show she grinned and mounted onto Grane who's member stayed erect, having almost unlimited stamina because of the Grimmcyte virus. "I'm not thinking straight but I will force you out of him!" Yang told the virus, not Grimm before kissing his chest, slamming her hips onto his length. Yang licked his neck while moving herself at a faster pace, drooling from how it felt but she had to win at any cost to get her lover back. Grane finally got himself free of his confusion then grabbed her ass with a smirk, slamming her all the way down till she felt her belly get a bump. Yang gritted her teeth as she tried to keep her mouth closed and her efforts up, both parties ramming against each other but in Yang's case it was a losing war as she succumbed to the pleasure. Grane went into overdrive and used his crippling move again, forcing tendrils into any availables causing Yang to let out a muffled scream. "That's it, fall under the black grace" Grane smirked then hit her g-spot hard, causing her to cum 5 times in under a minute and with each passing moment, she kept cumming more. "H-here it comes" he warned her as the tendrils and himself moved faster, shooting thick and hot seed into Yang making her belly enlarge to the limit, Yang coughing some cum up as her anger fueled powers calmed down. After giving her his seed and covering her in it from hair to toe, she passed out but of course Grane wasn't having that.
~6 Hours Later~
Yang was being mercilessly pounded into by her boyfriend Grane, who's lap she was sitting on after he felt her pregnancy occur. "M-my belly is moving!" her tongue hanged out as Grane finished her with seed and pulling out, her belly having many bumps. Not being able to handle the amount of cum Yang threw it up but it didn't matter, a moment later she began pushing out a dark sludge, she was gonna scream but Grane silenced her with a kiss. She couldn't believe it, she was giving birth to a Grimm, Grane's child. The sludge began taking its shape and eventually became a younger looking Grane, half his body covered in black the other in his normal human side and he was also slightly cuter than his father. By mothers instinct Yang picked up the child and hugged it "M-my son" she managed to say after having her brains fucked out. Grane smirked and rubbed her belly "Yes, yours " he told her and after the fatigue caught up to her she passed out though the mini Grane managed to land. The two males had a hive mind, making these two the same person both mentally and physically "You know what to do" Grane told his son who nodded and ran off, using its tendrils for freerunning while the real Grane picked up Yang and attached her to his back using his tendrils. After securing Yang on his back he ran off into the night, heading towards the Emerald Forest, pools worth of his cum left behind.
(Hey guys! Hope you enjoyed this and don't worry, more shall come! Up next is the Pink Hammersmith, Nora Valkyrie so lets see if she wants his 'King Taijitu", Ninja Corn signing off!)