"So, fire-brain. I noticed that cut on your face..." Kai said handing Natsu a box full of things he was throwing out. Natsu set the box and the contents on fire in a rage.
"I'm here to clean not get a facial inspection!" Natsu said throwing the burning rubbish out of the window.
"Hey be careful!" Kai said poking his head out of the window and apologising to people walking by.
"You piss me off." Natsu growled as she shoved random items into a bin-bag labelled 'throw away'.
"And you piss me off, but you don't see me throwing a fit." Kai said leaning over to Natsu with a smirk.
He was so smug in the way he acted towards him it reminded Natsu of people he used to beat the crap out of, but it also brought a good feeling.
With Gray's fights, Natsu felt fulfilled and still had a friend at the end of it, but ever since he left the gang he never saw Gray as much as he used to. He didn't mind though, spending time with his girlfriend was more than enough to make up for it.
"So was that from something kinky last night?" Kai said suggestively about the cut, as he emptied a bookshelf of old scribbles on paper and jotted down numbers he no longer needed.
"No." Natsu said bluntly reaching the corner of the roof with a duster.
Natsu never imagined the day he'd clean up after someone else, it made him more annoyed than he already was having to be in the same room as this demon. Literal demon, Natsu noticed a blood-red tail peeking out the trousers on Kai's backside while he was cleaning.
"How come that wasn't there yesterday?" Natsu thought he'd ask since Kai was question-asking himself.
"Oh this?" Kai said flicking the tail around playfully and proud. "It's a genetic thing. You learn to burst things into flames on your own?" Kai said trying to show that it wasn't something you could just make yourself have.
Natsu sighed, "I was taught this, but it's mine no doubt, there's no one else like me around!" Natsu said happily buzzing with memories of his dad Igneel, people cheering him on in fights, people shouting at him for destroying towns and for being the famous Salamander.
"Good thing there isn't." Kai said fanning out a fire Natsu unconsciously started behind himself.
"Bastard." Natsu mumbled under his breath.
Kai just ignored him, he really wanted to turn around and call him names back, but he knew it would result in messing up his house once again in a fight.
"What the heck is this?" Natsu said dragging a set of handcuffs out from under Kai's bed.
"Oh, just throw them on the chair or something." He replied not really caring his sexual tactics were out on display before a person he hardly knew, but that was Kai, no shame.
"Are you a policeman?" Natsu asked putting them on the chair in Kai's room like instructed.
Kai burst out laughing. "Seriously?" He said having to take a seat and calm down.
"I'm being serious." Natsu said slightly annoyed.
"Only in the bedroom my friend." Kai said composing himself to make the bed.
"What's that mean?" Natsu said helping him.
"Are you just pulling my leg? Or do you seriously..." Kai sighed. Natsu really didn't know what those handcuffs were used for, shows how newbie he was in the kinky department.
"It doesn't matter." Kai said not wanting to hang around the subject any longer as Natsu wouldn't understand.
A car horn beeped outside and Natsu groaned at the noise.
"Natsu I'm here to get you!" A male voice called out from outside. Kai blinked and looked to Natsu, "And that is?" He asked.
"Gray, he's my friend." Natsu said swinging himself out the window.
"So much for cleaning the whole house, pink haired little boy getting out of it!" He called after Natsu who was already hurled over in Gray's car.
The dark-haired man looked up to Kai and waved. "Sorry for taking him off your hands, well, you should be grateful this nut head would have probably set your place on fire by the time you were done."Gray said to Kai.
"Shut up Gray." Natsu said shakily.
Kai smirked happy that Natsu would have a horrible time in the car, it would make up for him not finishing the job.
Gray stripped off into his boxers which made Kai raise an eyebrow.
What the heck.
Then he saw the mark on his chest, the same one as Natsu.
They drove off and Kai went back to cleaning...
Kai sat down and thought about what he knew about all of this.
Natsu was an extreme hot-head no doubt, he didn't get it up often, and he hardly knew about any kinkiness. He was in a gang, and so was... Gray. Hmmm. The way Natsu punched him, it seemed like he must have accustomed to that way of communicating in his gang. Which Gray was in, therefore fights were common as Natsu told Gray to shut up in the car.
Natsu got that cut from fighting with someone in his gang.
"Better finish up." Kai said before he retired to his bed and decided he'd finish tomorrow.
Natsu asked his girlfriend about the handcuffs under Kai's bed, but she refused to go into detail, she was embarrassed he asked her in the first place, but Natsu was too after he learned what their purpose was.
"Oh..." Natsu could only reply.
"We don't need to do things like that to have fun right?" His girlfriend asked handing him some spicy chicken wings, which he loved. She placed some in a bowl for Happy who also dug in too busy feeling hungry to hear their conversation.
Natsu preferred to be close to feline his best friend so he and Happy often stayed over at his girlfriends' house if Natsu wasn't on a mission.
Happy often stayed at the guild for leisure and fun with his own love-interest so the two were never that lonely when they were apart.
