Thirsty

After Muzan accepting defeat that Yoriichi was stronger. He just didn't want to see Yoriichi ever again. When he was on the search to find a victim to kill he saw Yoriichi waiting for him. They made eye contact, He tried to run away but Yoriichi pulled him back, Catching Yoriichi's eyes he was trembling he begged Yoriichi to spare his life. 

Please spare me I'll do anything. 

Anything? You'll do anything?

Y-Yes! I swear! I'll do anything!

Yoriichi grabbed Muzan by his shirt and pulled him up to his feet. To Muzan's surprise Yoriichi was kissing him. Muzan and Yoriichi both didn't want it but they couldn't help but melt into the kiss. 

Will you still do anything Muzan?

Muzan didn't want to say anything but he wanted more. He couldn't accept that he wanted his enemy  to kiss him.

Answer me Muzan, Will you still do anything?

Muzan once again had to accept defeat and tell Yoriichi what he wanted 

Yes I will..

With those words Yoriichi grabbed Muzan back into a kiss making both of them want each other even more. Yoriichi started to unravel Muzan's clothes revealing his bare skin. Yoriichi broke the kiss off  and started to suck on Muzan's neck making Muzan moan.

Ah~

Yoriichi chuckled pulling his mouth away from Muzan's neck moving downwards to Muzan's nipples. Yoriichi started to suck on them. When he pulled away they were purple. Yoriichi moved his leg in-between Muzan's legs. Yoriichi's leg started to grind on Muzan's crouch. 

Hmm~ 

Muzan wanted it faster and he started to grind his body on Yoriichi's leg. Yoriichi moved his leg from between Muzan's legs making Muzan whimper.

 Impatient  are we~?

Yoriichi pulled Muzan down to the floor and Muzan knew what he had to do. Muzan started to take off Yoriichi's pants revealing Yoriichi's throbbing cock. Muzan wanted to suck it but he also didn't. He didn't want to give Yoriichi so much power over him so he didn't budge when Yoriichi pulled his face closer.

Hm~ Disobedient Huh? 

Muzan was about to talk and Yoriichi took advantage of it and he shoved his cock into Muzan's mouth. 

Hm~?!

Muzan still didn't move so Yoriichi moved his head back and forth. Muzan couldn't keep it up. He started to suck Yoriichi's cock. Yoriichi was about to reach his climax he pushed Muzan head back down. Muzan was balls deep and his eyes teared up and he choked on Yoriichi's cum. 

Yoriichi grabbed Muzan back up and striped Muzan and went back to give Muzan a kiss. He broke the kiss and shoved two fingers in Muzan's mouth. He turned Muzan around and shoved the two fingers that were wet into Muzan making him gasp. 

After playing around in Muzan's ass he finally found Muzan's prostate. Muzan moaned loudly, his cock was leaking pre-cum. 

Yoriichi pulled his fingers out making Muzan whimper but that didn't last long when the emptiness of Muzan's ass was filled by Yoriichi's cock.

Ahh~~~

Yoriichi kept thrusting in and out making Muzan gasp louder. Yoriichi and Muzan came at the same time. 

Yoriichi and Muzan were panting loudly, Muzan couldn't resist falling asleep. 

Yoriichi caught him and brought him to his house and put him on the bed and slept next to him cuddling him.

Muzan and Yoriichi were both at their breaking point. 

Arch-enemies, Demon King and Demon Slayer, Killer and Savior. 

The hatred they had for each other makes it even harder to resist each other.

They were thirsty, greedy. They needed  each other more than they knew..