"You make a horrible parent"

Chapter 1| A wild oni appears

 "Ah! nghh~"

"Shhhh, it's alright pet" Muzan whispered in Giyuu's ear as he continued to caress his body. "P-please be gentle" Giyuu mumbled

The demon king moved his fingers inside Giyuu, brushing over his prostate making his pet moan in pleasure. But that wasn't enough. Giyuu wanted more, he wanted his master.

Muzan kissed Giyuu on the lips and danced with his tongue. "Mm~" Giyuu moaned into the kiss, he knew this was wrong but it felt so good. Just how did he get here? The last thing he remembers is Giyuu dismissing the demons and now there they are. Naked. In bed. With Muzan devouring him.

The position switched to Giyuu being on top of Muzan. The demon king observed his masterpiece. Hickeys and bite marks trailed from Giyuu's neck to his chest and stomach. "How cute" Muzan purred

"AH~!"

Giyuu gasped as his husband grinded against him and sucked on his left nipple while pinching and rubbing the other. "Muzan p-lease! Oh, fuck.." Giyuu called out "Oh? And who permitted you to call me that pet?" Muzan asked with a smirk and looked at Giyuu's hard cock, trickling with pre-cum

The demon king felt turned on by the sight of his pet, panting on top of him with bite marks and hickeys, marks that labeled him as his. Giyuu's cock twitching "M-master please..." The water hashira couldn't take it anymore "So needy" Muzan whispered in his pets ear and nibbled on it "Master"

Muzan lifted Giyuu and positioned him over his cock and lowered him slowly. Giyuu whimpering and going limp at the pain and pleasure. Just when it was halfway in, Muzan pushed him down "F-fuck!" Giyuu yelled out leaning forward from the stimulation, his hands landing on Muzans chest.

Muzan smirked and tucked Giyuu's hair behind his ear "Ride me, pet" he ordered.

Giyuu shivered slightly and started to move his hips slowly "Hah..hah.." he lifted his body and slowly went down "I-it's too big.." The raven whimpered "I-i can't-" Muzan grew impatient and grabbed Giyuu's hips, slamming him into his cock once more

Giyuu's moans filled the room as Muzan moved him. He groaned and whispered "Look at you, all wet and quivering as my dick penetrates you. How cute" 

 Giyuu's face reddened with embarrassment. Opening his mouth to say something, but all that came out was a loud moan. "Oh?" The demon suddenly stopped moving, leaving giyuu whining. He sat up, making the hashira confused. "Found it" he mumbled and started to move at the rougher pace, making Giyuu arch his back and moan loudly. Drool coming out of his mouth

Muzan continued to roughly thrust into Giyuu, continuously abusing his spot. He growled and bit into Giyuu's shoulder.

Giyuu arched back and came onto the demon king's chest

"You like being bitten huh?"

He changed positions and made Giyuu lay on his back. He lifted Giyuus's leg which made his body tilt sideways a bit "N-no! Wait!" Muzan didn't give the raven head a chance to take a breather before he grabbed his thigh and started thrusting inside him again "Aw, what's wrong? I thought you wanted me to fuck you sideways?"

Giyuu was seeing stars. He didn't feel pain but instead, he felt gushes of pleasure roaming throughout his body. He liked being bitten. He liked being abused. And he wanted more. Muzan was hitting the deepest parts of his insides, it felt good, it was addicting.

It wasn't until a few more thrusts of Muzans dick did he came for a second time. Blood and cum staining the sheets, Muzan pulled out and Giyuu lay in bed, exhausted. "I hate you..." he mumbled out and his husband only looked at him "Hush up now Giyuu," He said as he stood up. The water hashira didn't feel anything else other than his ass sore