It just comes natural to him honestly he spends so much time between your thighs whether it be licking and sucking on your puffy clit, over stimulating you until you can't speak, fingering your sopping wet hole and toying with your plump lips or kissing your pussy slow and lazy to tease you until your begging for him to give you more. Like one time you were laying on you back in one of his shirts and strawberry lace panties curly hair now frizzy and a mess, katsuki was laying between your thighs face down on your panties. You were scrolling through tik tok not paying him mind because this wasn't the first time he had done something like this. And that's when you felt something wet and hot between your legs katsuki was sucking on your clothed clit eyes still close and grumbling lowly, was he still sleeping? This man was sleeping and un consciously sucking on your clit like a damn baby, you tried to push him off you but he just tugged your hand away and buried his face deeper into your core trying to move the fabric away with his nose. He muttered something about being selfish and keeping your sweetness all to yourself as if he didn't eat you off the BONE an hour ago and went back into his slumber continuing his assault on your bud . Or when it was a late night about 10, you were in your matching pink hello kitty pj's you bought a few Halloweens back with katsu, he was sitting on the couch legs wide open and you sat on his lap your knees to your chest focusing on the mean girls movie you had put on about 20 minutes ago. You could feel his chest rising and falling on your back, steady and relaxed, and he was. With his eyes still focused on the movie, he opened your legs wider, and tugged your shorts to the side revealing your bare pussy to the open and cool air. He took your lips between his callused fingers and began to pinch and squeeze them together, he ran his big palms up and down your heat just feeling and literally playing with your pussy, and the worst part was he didn't even notice what he was doing, laughing at the scenes when Regina is just being the embodiment of a dumb blonde and only realizes when he takes his hand off to scratch the side of his nose and smells your wetness on his fingers, he looks down at you, legs wide open, shorts to the side and pussy glistening with the help of the light from the tv his mouth forms a small 'o' before shooting you a smirk that makes u dumbly clench around nothing before he goes back to watching the moves fingers slowly circling your puffy clit. Last one I swearr, when your laying in the bed about to go to sleep he's spooning you snoring and breathing in your ear a bit loudly but you don't mind you know he's tired and needs rest, his body is warm and plush against yours helping you fall asleep easily, that is until you feel arms trying to pull down your panties, "baby what are you doin" you call out to him in a squeaky soft voice "take these off need to feel ya" he says voice low and deep and you obey sliding off your panties and letting it get lost in the tangles of sheets and limbs on the bed. he grumbles in approval and palms your cunt finding your entrance easily and teasing it with the tip of his fingers, it wasn't long before you got wet enough for him to push his finger inside of you moving slightly in and out of your needy hole. let's just say you didn't get any sleep that night, it was spent grinding, well trying to grind on katsukis fingers to get some sort of friction but he was moving so teasingly slow and you know it wasn't on purpose because he was snoring. Let's just say it was a restless and painful night