Your pov

I was makotos younger sister and also apart of the swim team, which meant I got to see my crush half naked all the time. At the moment I was heading over to Haru's house to surprise him with some fresh mackerel. I knocked on the door but he didn't answer, like usual. So I just broke in and sat the food down in the kitchen. Haru lived alone, so I knew he was here when I heard the water running in the bathroom. I sighed, of course he was taking a bath. I walked off to the bathroom and raised my hand to knock, but stopped when I heard it.
     "Uh.. fuc- Yeah~~" I heard harus strained voice say as the water sloshed around A lot. I frowned, had he fallen? Was he stuck? I opened the door, not afraid to catch him naked or anything. He always had on his swim suit.
Or at least he usually did.
As I stepped quietly into the room I realized that maybe he didn't always wear it.
     Haru was not only naked in the bath, but he was naked, and hard. His hand was wrapped around his cock and he was slowly stroking it. His eyes were closed and I'd cane in so quiet he hadn't noticed. I heard him moan out softly and I swore, it was my name. I blushed and found my self stripping down very quietly, until I was in just my panties and bra. I stepped into the water and leaned over him. Harus eyes lazily drifted open and then went wide as he realized what was going on. His hand stopped pumping and instead he focused on my body.
      "I'm dreaming" he said softly, his hand moving to rub over the tip.
       "Then so am I" I said as my hand moved down to his cock, before I ran my fingers over his base. His breath caught in his throat as he felt my finger tips.
        "You're real... you're naked.." he breathed and his hands moved to my chest, before pulling the bra off and feeling up my chest.
        "Keep stroking" I told him and he blushed, before dropping his hand to his cock and pumping himself more. One hand stayed on my chest and he massaged and rubbed my nipple. I gasped and moaned out his name quietly.
       "What are you doing here?" He breathed out and I seen him pick up his pace
"Are you complaining?" I asked as I moved an started to kiss on his neck quickly and sweetly. His eyes closed for a moment and I put my hand over top of his base. I started to stroke him and soon replaced his hand with my own. I pumped his faster than he had been doing and he bucked upward.
"If you naked and in my tub..." he breathed out and the water sloshed around more as he thrusted over and over into my hand. I seen him suck in his breath hard and I could tell he was close.
"You want me to ride you...?" I asked and he nodded. I sighed and moved over top of him, I was gonna put him in slow but he shoved in all the way on his own.
"Ahh~~!" I yelled out and threw my head back. He looked down at where we connected and he got a faint blush.
"You're not a virgin" he breathed out and I blushed now too. "Rin?" He guessed and I blushed hard.
"All those winters he came in to see his family..... he was seeing you too wasn't he?" Haru asked and his hand started to roughly pinch and pull on my nipple. I gasped and moaned softly as he did it to me.
"Y-yeah! I was kinda h-his late night booty c-caHHH" I couldn't finish my words since Haru moved and started to roughly bounce me up and down on him. I gasped and moaned as he fucked me relentlessly. He had lots of stamina from swimming and he wasn't afraid to show it here. Suddenly he pulled me off and flipped me around, before shoving me back down again. I was facing away from him and he shoved me into the water slightly. I was riding him backwards and he started to roughly pound into me more and more. I cussed his name out and grabbed the side of the tub.
"You like that?" He asked and I gave out another loud, lewd moan. He slammed in harder and I cussed out. Haru moaned my name and gripped my hip really hard as he came into me. I gasped as he did and he just kept pounding away, not losing his rhythm. I yelled again and came as well.
Our hard breaths were the only thing heard as we both calmed down. I moved off haru and he sighed softly. I got out of his tub and cleaned off, before looking down at him. He stood from the tub and looked down at me.
"You seem happy" I laughed and kissed his cheek, before moving away again. He got out and came up behind me, before kissing on my neck and sucking a hickey down there.
"Haru, (y/n), if you two are done we have a movie to watch" my brothers voice came from outside the door.
"When did you get here?!" I yelled in shock.
"Five minutes after you did" I heard him scoff and walk off.
Haru looked at me and him in the mirror, still wet. He bent me over the sink slightly and started to dry jump slightly.
"In a minute" he said loud enough to be heard. "I'm not done"