Stela, the plump Raichu, was lounging in the cozy den she shared with her brother Seija, a Pikachu of average size but with an unusually large cock. She suddenly felt a wave of heat wash over her, and she groaned, realizing she was going into heat.
Seija entered the den and noticed his sister's discomfort. "Stela, what's wrong?" he asked, concern etched on his face.
Stela snapped at him, calling him a "dense little rodent" for not realizing she was going into heat. "Get ready for a long day of mating, Seija," she said, her voice filled with frustration.
Seija's eyes widened at the prospect, but he couldn't deny the stirring in his loins. He tried to act nonchalant, asking, "Are you sure you want to do this with me, Stela?"
Stela rolled her eyes, calling Seija an "idiot" for questioning her. She reminded him that he was the only one who could satisfy her during her heats.
Seija blushed at the compliment, but tried to play it cool. "Are you sure you want to drain me dry all day?" he asked, a smirk playing on his lips.
Stela smirked, calling Seija a "cum bucket" and telling him she'd make it worth his while. She pounced on him, ready to start mating.
Seija yelped in surprise, but quickly surrendered to his own sexual desires. He started to fuck Stela, their bodies moving in a rhythm as old as time.
Stela purred with pleasure, her large body moving with ease as Seija's large cock filled her up. She told him how good he felt inside her.
Seija couldn't help but agree, moaning as Stela's fat ass bounced off his hips. He leaned down to kiss her, their tongues intertwining.
Stela deepthroated Seija, taking his entire length down her throat. She hummed with pleasure, the vibrations sending shivers down Seija's spine.
Seija couldn't take it any longer and filled Stela's womb with his cum. Stela purred with satisfaction, her stomach bulging with Seija's seed.
Seija pulled out, panting heavily. Stela smirked, calling him a "little sprinkler" and telling him she wasn't done with him yet.
Seija gulped, but nodded in agreement. He knew he was in for a long day of mating with his older sister.
Stela locked her legs around Seija, pulling him back in for another round of mating. She told him to give her all he's got, and Seija was more than happy to oblige. The den was filled with the sounds of their moans and the scent of their lust, a testament to their primal bond.
Want to know how it ends?
This is just the opening chapter. Continue the saga — or write a steamy tale starring you.