Demon Slayer writings

Human Nature (Rengoku 🍋 )

(fluff nsfw) Based on the head-cannon Rengoku doesn't mind being seen naked.

It was a long day, you've been up for the past 24 hours, it finally just reached the morning time. Not having a clock near you , you could only assume it to be around 7 or 8 A.M.
Trudging through the halls of your home in the demon slayer headquarters you slowly peeled off your clothing. First your kimono, then your uniform, followed by your undergarments and knee socks.

Standing still in the kitchen for a bit, fully undressed, you stocked some light snacks and tea on a tray, then proceeded to head to your bathing area.
Oyakata-sama was kind enough to provide you with a semi-outdoor bath. It was built into the ground with beautiful hardwood around it. The tub was easy to climb down into , even when injured.

Sliding down into the tub, you placed the tray on the floor by the corner closest to the door. You moved to the opposite corner of the tub, the water wasn't deep enough to swim but it wasn't shallow enough you could easily walk in. Dropping a towel down, you placed both your elbows onto it, resting your head in your hands. After awhile you laid your arms out and sank into the tub. The backside of the bath was indoors while the outer corners were exposed under the sun.

Light shone onto your back and head, even though this was your own home, you felt exposed and vulnerable.
" Hmmm," you hummed to yourself, thinking back to your past missions from the night before, wondering how you could have handled things differently, what you needed to work on, and how you could have ended the fight faster. You were so lost in thought you didn't notice a flame-haired man waltz his way in.

Rengoku casually undressed himself, not realizing you were actually just lost in thought and not asleep. It wasn't until the splash of him getting in caught your attention, you snapped your head up.

" Oh y/n! I didn't realize you were awake!! How are you, you must be tired!" The boy beamed. Not only could you feel his body warmth radiating onto your back, but you could feel the heat coming from your face as a slight blush crept across your cheeks.

" Rengoku what do you need, you know I don't like bathing together."

You were very, VERY,well aware how comfortable Rengoku was with his figure, he was not only confident but didn't mind being seen nude. You on the other hand were constantly covering yourself.
The only thing that separated him from seeing your back-side was the bubbly water, which would only last so long before the bubbles and foam popped.

" There's nothing to be ashamed of, it's only human nature to see each other nude." He laughed and made his way over to you.

" No no no! " you put one hand over your face , turned around and placed the other in front of you. " Stop right there, do not come closer. " If you weren't already beat red you were now.
Your hand did nothing to stop him, in fact it made matters worse when his chest muscles hit your palm. Steam might as well of come out of your ears, you were behind flustered. You peaked between your fingers to see Rengoku's upper half above water. He had the biggest smile on his face as he studied your reaction to him.
Your eyes scanned his pectoral muscles and down his chest to his stomach, stopping at his v-line.
" See nothing to be embarrassed about, you've seen me now!"

" That's not the point!" Your hand left your face and whatever hair was covering your chest bounced out of the way, giving the flame pillar a full package view of your breasts.
He clapped his hands together then placed them on your shoulders. " Wow y/n , you look even more beautiful naked."

Your mouth nearly hit the bottom of the bath, quickly pushing his hands off your shoulders the moving your own hands to cover your breasts, you turned away. " Y-you weren't supposed to see!" Your hands moved to the sides of your face, keeping your arms in a position where they still covered your chest as best as they could. Face flushed red, Rengoku couldn't understand why.

He always viewed being naked and seeing others naked as normal. He took great pride in his body and seeing how amazing yours was also, he couldn't help but wonder why you were embarrassed.
"Y/N if I hurt your feelings I'm sorry, I just thought it would be nice to bathe together, especially since you've been up for so long. I could shampoo your hair and wash your back!"

Sighing, you turned to face him, hans still covering yourself. " You didn't hurt anything , it's just weird having someone see me naked, especially since we aren't uhhh- ya know, a thing? It also doesn't help I'm not as confident you in terms of my body Rengoku."

Rengoku stared at you for a few moments before erupting into laugher. He held a fist up to his mouth to try and stifle it. This certainly didn't make you feel better about the situation. Furrowing your brows, you pouted.

" Sorry sorry, if being a thing worries you," He leaned in dangerously close. " Why don't we become an item?" He raised his eyebrow at your blushing face, taking in your expression before lightly pressing his lips to yours.
You stood still , shocked, eyes wide open at the boy's somewhat confession. Before he could pull away you kissed him back, bringing a hand up to cup his left cheek.
Rengoku pulled his face back from yours before kissing the side of your mouth, trailing butterfly kisses across your lower jaw to your ear. He leaned in even further, pressing his body against yours. " Why don't I show you why I'm confident in myself."

Your breath hitched.

It suddenly felt as tho Rengoku was 7 feet tall, he loomed over you, pressing your back into the side of the bath. One hand slide to your waist while the other held the small of your back, keeping you steady as your legs shook slightly in both excitement and nervousness.

Pressing his lips against your neck he attacked your skin. Lips sucking and nibbling at every area he could reach. Occasionally his hair would tickle at your chest, causing a slight giggle to escape your shut lips. He smiled into the crook of your neck before trailing his kissed lower. He licked at the skin around your nipple while the hand on your waist moved to your left breast, toying with your sensitive nub.

Humming against your breast he took your right nipple into his mouth, swirling his tongue around and around. His left hand massaged and pinched away at the skin of your other breast. Rengoku bit down lighly onto the nub in his mouth, causing a small gasp to leave your mouth. He looked up at you, still licking at your breast, looking for approval.