Exchange Life: Little Sister's Best Friend

 

Source: https://www.pixiv.net/en/artworks/105724267

Transcript since it's a bit hard to read:

Exchange Life: Little Sister's Best Friend

Eric was bored with life. He heard his sister next door laughing with her friends. She just seemed to have so much more fun than him. Emily was two years younger than him and part of the popular crowd. She and all her friends were pretty and athletic or smart. They got together regularly and went out to actually do things. Meanwhile all his friends were boring nerds who never wanted to leave the house. He was honestly envious. He did track and wasn't unattractive, but due to his interests he only got along with the 'nerdy' crowd. Eric sighed as he heard her leave the room. He didn't know what changed but his sister seemed to hate him now. They used to be close. Now she would barely look at him. He honestly missed hanging out with her. He just wanted to be close to his sister, have new friends who were fun. He wanted to be popular and have everyone think he was hot.

He collapsed on his bed in a funk. "Oh well, wonder if the new Sorcery TCG set is out." Eric opened his phone to check and noticed a new app on his phone. "Exchange Life, what the heck? Did I get a virus?" He was about to delete it, but something inside him urged him to open it. "I hope I don't regret this..." Eric tapped the app icon on the screen and a tutorial popped up. "'Welcome to Exchange Life! You who has been unhappy with their life now has a chance to change things up! Search for someone you have compatibility with, the higher the better, and once you found someone you are interested in match with them. Then once you've matched swap lives with the other person and become someone else!' Well, this sounds like a bunch of BS but let me see." He started scrolling through various pictures and was surprised by the sheer variety of people. He thought it would be flooded with unattractive people or old people. Instead there were average people like him, rich people, hot people, successful people. People who nobody would think of as wanting out of their life but were unhappy just like him. He absentmindedly scrolled through the pictures and clicked on several that looked interesting, but nobody had compatibility above 50%. He started doom scrolling until one picture made him stop. “Isn’t that Leah?” He tapped the picture to expand the profile, “Holy crap. It is!” Leah was his sister’s best friend and the most gorgeous girl Eric had ever seen. Of course he was a bit biased since he had a major crush on her. She was smart, funny and ridiculously smart and talented. She’d won several art competitions and he’d seen her drawings online. He’d stumbled upon one of her accounts by accident and discovered she loved drawing porn. It only made him crush on her harder since it broke the facade of little miss perfect. He was surprised someone like her wanted to change things up; she was pretty much the center of every social group and everyone loved her. Not to mention she had an incredible body. Her boobs put even the teachers to shame and her heart shaped derriere drew the gaze of everyone when she walked by. Eric would love to be that good looking. He sighed and looked down at the compatibility and swore. “200%? What the heck? Everyone else was low.” He tapped on it, “200% is a guarantee of a perfect new life for you. Happy swapping!” He hesitated. He wasn’t sure about becoming a girl even if it was his crush. “Ah fuck it, it pretty much solves everything I was complaining about. Plus I’d get to touch those boobs whenever I want!” He blushed as he hit the match button, already imagining ravaging Leah’s body.

Eric got a message the next day that Leah had accepted his match. He was ecstatic if nervous. They messaged each other and decided to meet up in a few days when nobody would be at her house. Eric couldn’t wait. The next few days were torturous. They tried to act normally when they ran into each other at school, but there was an undercurrent of excitement there. Emily asked him about it, but Eric just told her “it was nothing.” She seemed suspicious but surprisingly let it go. Usually she’d pester him about this until he cracked then act smug. “Whatever.”

Finally it was time. After school he made his way over to Leah’s house and knocked on the door. Leah answered and smiled at him. “Come on in!” She seemed just as nervous as he was. “Do you want anything to drink or eat? I made some brownies, but I don’t know if you like them. Oh gosh, I’m so silly. Sorry.” Eric couldn’t help but smile.

“No it’s fine. Thanks.” She twirled a finger in her hair. “I could use a glass of water though.” She beamed at him and pointed him up to her room.

“My room is the first door on the right. You can wait there. I’ll be up soon!” Eric felt weird going into a girls room. Especially since he was there alone. It was neat and had lots of cute decorations. There was a large art station with one of those digital drawing pads next to her laptop. He looked at it in interest but it was turned off. [Huh, this will be mine soon. I’ll be the one drawing…] It was a strange thought, but oddly alluring. He heard Leah come up and took a seat. She entered and handed him the cup of water. Their hands met and they both blushed. “So, uh, why did you want to swap?” Eric thought for a moment.

“I didn’t really until I saw it was you...” Eric turned crimson as he realized how it sounded, “I mean you and your friends always seem to do fun things. You go out, party, and are popular. I’m kind of a nerd. You’re super pretty and smart.” He couldn’t continue. It was too embarrassing. Leah’s eyes were wide. “Anyways, what about you.”

“Um, I’m tired of how much stuff I have to do. All the studying and hard work for art. Going out with friends all the time. Getting leered at by guys and carrying these around,” Leah pointed to her chest. “I’m tired of having to watch my weight. I’m already a little pudgy because we’ve gone out to cake shops too many times recently. Do you know how long it’s been since I’ve had pizza. I’d love to do track but it’s impossible with a body like this.” Eric understood where she was coming from. Her face turned red, “And I was fine swapping if it was you...” [Wait, does she like me? There is no way, she’s gorgeous and popular. I’m a nerd.] They sat in an awkward silence for a few moments when their phones both beeped. Eric pulled out his phones and saw the instructions to swap. They looked at each other,

“You ready?” Leah nodded. The linked fingers and Eric felt his heartbeat speed up. He’d dreamed of holding her hands for a while now. Now that he was it was to become her. It was a strange twist of fate. They spoke the words and after a strange out of body experience Eric was looking at himself. “Woah,” he held a hand up to his throat as he heard his new voice. They spent a few minutes exploring their new bodies. Leah pulled out Eric's big cock in wonder and for some reason Eric couldn't look away. He felt himself growing damp. Leah's body wanted the boy in front of it. Badly. [Oh my god, Leah likes me too!] Eric was ecstatic. Then he smiled. [No, I like Eric. After all, I'm Leah.] Eric wondered how she touched herself. Whether she moaned his name as she fondled her breasts. If she picked special outfits when she went to see Emily on the off chance Eric was there. If the porn she drew of busty anime girls getting railed by huge cocks was her fantasizing about receiving Eric's cock. If she fantasized about their future together. If she worked hard in school so she could get a great career and turn him into a house husband. He wasn't sure where that last thought came from, but it just served to ignite his excitement even more. He saw a message pop up on Leah's phone for the next part. He unlocked it with her thumbprint, "Hey, I know you want to keep staring at your new cock, but want to get started on part 2?" Leah blushed and pulled her pants back up, sitting across from him again.

They spoke the next part of the spell and Leah wondered if anything would happen. She opened her eyes and blushed as she realized Eric was staring at her chest. She couldn't believe she'd been brave enough to invite him over. She'd liked Eric for a long time. He was so sweet and gentle. He never treated her like a piece of meat like all the other boys her age. He was 2 years older then her so they didn't have a chance to hang out much and Emily didn't let her barge into his room. [Mommy and daddy won't be home until really late so I have to get him to stay as long as I can. This is my chance!] That's when it dawned on her. [Holy crap, it worked! I'm completely Leah now.] She couldn't even remember anything about her life as Eric. She remembered doing her make-up and changing into a cute outfit before Eric came over. She remembered hanging out with her friends at lunch and gossiping. She looked at him and smiled. She knew Eric liked her but the old Leah was too timid to actually do anything, but she was filled with a confidence in herself. She was hot, she was smart, she was talented, she was funny. She got up and sat on his lap. He blushed but didn't push her off,

"Leah, w-w-what are you doing?" He was cute when he was nervous. She felt his erection press into her meaty thighs.

"I like you Eric. Like like you. I have for a long time. And I know you feel that way too." She kissed him. It was her first kiss. It was sloppy and messy. However for her it was the most incredible thing in the world. She was giddy. She was feeling aggressive today. Today Eric would be hers. Emily had been mad at him for being so oblivious to her feelings so she didn't have to worry about losing her best friend. She pulled up her shirt and exposed her chest, "I know you've been staring at them. Go ahead, you can touch." Eric's hands shook as he grabbed them and Leah let out a soft moan. This was the first time she was glad she had such massive boobs. 30 minutes later she lay curled up next to him on the bed.

"So, uh, does this mean we're dating now?" Eric's face was red. Leah rolled her eyes.

"Of course it does you idiot. I'm you're girlfriend now, so I expect you to treat me well!" She smiled at him. She had finally landed her crush and couldn't be happier. She was going to enjoy this life.