My big stepsister takes care of me for the first time [FFM] [first person]

Katie was the best step-sister I could have ever hoped for. She was five years older than me so she was great at helping me with homework, giving me advice about high school, and helping me apply to college. She even gave me advice about girls, since she was bi and dated a lot of women. I couldn’t have asked for anything more in a big sister. I always looked up to her.

We kept in touch after I moved halfway across the country for college. But with her starting work and me busy with school, we weren’t super close. After I graduated college as an aimless English major making up my plans for work as I went along, Katie offered me the second bedroom in her condo rent free.

I could tell things were different when I moved in this past week. Katie looked at me differently. I did look a little different from when we last lived together. I was older, of course, and had grown a beard. But my roommates in college had been gym rats and I sometimes worked out with them. I didn’t look like The Rock or anything, but I was in pretty good shape. Katie was just as I remembered her. She was a big sister in more ways than one. She was six feet tall and had always been athletic, but was always on the bench in high school volleyball because, as she put it “my damn tits are too big.” She had a point – none of my classmates, even through college, had a chest as large as hers.

I didn’t pay much mind to her change in behavior, though. Not until last night. I got home from my shift as a server and just wanted to relax. Katie was going to be out all night with her girlfriend Rachel. I went into my bedroom, shut the door, and stripped down to my boxer briefs. I opened up my throwaway reddit account. I’d curated a pretty good list of porn subreddits – amateur, professional, pics, gifs. I picked one of my faves – Alexa Grace – and started opening up tabs. My favorite way to enjoy myself was to keep from touching myself as long as possible until I couldn’t take it anymore.

Looking at gif after gif, I finally clicked on a video of a lesbian scene with her and Dillion Harper. I was entranced. I didn’t even know what to do when the bedroom door opened.

Katie and Rachel walked in. “Hey little bro, have you seen my spare usb charger, I think I had one in here before you moved in – oh my God.” But she didn’t look away. “Are you looking at porn? Oh my God, I am so sorry.”

Then her attitude changed. She grinned. “Wait, is that what you like? Lesbians? Let me see that.”

She walked over, her long brunette hair bouncing as she sat by me on the bed. “Not bad, actually. And I would know. You should have told me you watched this stuff, Rachel and I could recommend all kinds of things.” She watched for a few more seconds, and looked up at me with a sly smile. “Show me more.”

I clicked to a new tab. Katie was fascinated. “This is really good. I thought you were missing out on what I watch, it looks like I was missing out on what you watch.” Her gaze lowered to my grey boxer briefs. I had gotten extremely turned on by all the pics and videos, and I had soaked a small patch through with precum.

“Oh my God,” Katie gasped. “That’s your precum.” I nodded. “You’re so sticky.” She shifted over so she could bend down and lick my wet spot. “That’s good.” Slow, tender licks, tasting me, and then exploring more, kissing me all over my boxers. “Keep watching porn. Let me help you.” She slid my boxers down and off of me. I’m average length, but very girthy, and uncut.
Katie was impressed. “That is not what I expected. All of these years, and I never took advantage of this, the two of us have wasted so much time,” Katie said, nuzzling my cock softly before taking it in her hands. “Keep watching porn, I want to do this for you.” I clicked over to Angela White, another fave of mine. I gazed at her large breasts in beautiful lacy lingerie while Katie slowly stroked me. Then a gif of her taking a cock in her ass. Then a gif of her giving a sensual blowjob. All the while, Katie gently jerked me off.
Katie turned to look at Rachel, who had been lingering at the doorway, clearly a little unsure of what to do. “What do you think? Want to give it a try?”
“I never… I’ve never been with an uncut guy before.”
“You’ve dated lots of guys.”
“Katie, did you forget I’m Jewish? Sure I’ve sucked dick a bunch before but never one like that.”

“Well, give it a try.”

Katie moved out of the way as Rachel took me in her hand. Tentatively at first, but not for long.

“I forgot how good this feels.”

“You feel good?” Katie asked.

“I feel powerful.” With that, Rachel slowly took me into her mouth. She brushed her black hair to the side so I could get a better view. She kept on going slowly, but with purpose. Katie moved off the bed to stand next to her.

“You… you don’t mind?” I sputtered out as I looked at them.

Rachel deliberately slowly moved her lips up my shaft and off of me, holding my cock in her hand as she gazed up at me. She looked at Katie and they shared a smile. “I’ve thought you were hot since I started dating your sister. We can share.” She went back to slowly sucking me.

Katie smiled warmly at me too. “We’d both love to share you. But I’ll want you all for myself too. Family privilege.”

Rachel sped up, using her hands as well as her mouth. I could feel my orgasm building up at the base of my cock. “I’m… I’m gonna cum soon,” I stammered.

“Oh my God yes,” said Katie, stripping off her shirt revealing a lacy black bra. “Then cum to these.” She unclasped her bra from the back, and her massive natural tits dropped down. “They’re all for you. And they will be too, as long as we’re living together. I’m going to take such good care of you, little brother. I’ve seen you stare at my tits before. Now you can have them. Cum for them. Cum for me.”

My breathing became heavier as the feeling in my cock gained strength. I stared at Katie’s giant tits as she held them up for me and encouraged me. I shifted my gaze to Rachel, hard at work moaning while she sucked and stroked me. The buildup was immense and I held out for as long as possible before blurting out “I’m cumming!” watching Katie rub her breasts for me.

Rachel moaned in pleasure as I felt her suck down all of my cum. When she finished, she turned to Katie and smiled.

Katie looked down at her and returned the smile. “You made my little brother so happy, babe. Thank you. I owe you.” Katie looked at me and smirked. “If you’re good, maybe we’ll let you watch.”

But that’s a story for another time.

Source: reddit.com/r/sexystories/comments/chhl4x/my_big_stepsister_takes_care_of_me_for_the_first