Author's Note

Let's start in the Equestria Girls universe as Marble takes a big step into womanhood.

A is for Adolescence

Crimson looks at her alphabet wall. She takes out a red 'A' and has it grow a little bit. "A is for Adolescence."

Inside the Pie family house, Marble showers up to prepare for a date. After drying off, she wraps a towel around her body and drying off her hair. As she brushes off her hair, she hears a knock on the door. "Who's there?"

"It's me. Limestone." A voice calls out. "What are you up to."

"I'm just drying my hair. If you don't mind, my eldest sister, I'd like to be alone for a bit longer."

"Okay. Okay. I was just checking on you."

Limestone leaves Marble alone so she can finish getting ready. "To think, she used to be timid."

Later, Marble wore a sky blue top and navy blue long skirt. After putting on a pair of navy blue shoes, she looks at herself in the mirror.

"I look beautiful." Marble said to herself. "Mom and Dad are right. I've grown up well."

Her parents look at her with satisfying eyes.

"My goodness." Cloudy Quartz said. "You look gorgeous. Your date will love to be with you."

"Thanks, mother." Marble replied. "I hope Brandon will be equally impressed."

"Trust me, dear. He'll be surprised to see how you look."

Igneous Rock Pie comes in with a pill bottle. "This will be in case your night together turns erotic."

Marble sees that these are birth control pills. She was shocked. "Do you think it'll go that far?"

"I have a feeling about this night. Some of Pinkie's pinkie sense must've rubbed off on be me. Now, go. Make this night memorable."

"Okay, father. Here I go."

Marble soon heads out for a date. Pinkie watches with concern. "I hope this guy will treat her right."

Later, Marble walks down the street with a yellow skinned boy with forest green hair.

"That restaurant you took me to was great, Brandon." Marble said.

"I'm glad you liked it." Her date replied. "I hope your parents are okay with you hanging out at my place."

"I texted them earlier. They gave me the thumbs up."

"Excellent. Not bad for the youngest member of the Pie Family."

"This made Marble blush. Inside Brandon's house, the two young lovers are seen in Brandon's room kissing each other. They also rubbed against each other. Brandon was impressed with Marble's body. "Wow. I never knew somebody like you could blossom so beautifully."

"Thank you." Marble replied. "I'll bet I know how you like to see how much I blossomed."

Unbuttoning her top, Marble revealed her green bra. Brandon liked what he sees. "I like it. Not too big, not too small."

Brandon took off his red shirt to show Marble his chest. She was surprised. "Talk about a six pack. You must work out a lot."

Brandon unzipped his pants as Marble unzipped her skirt. Brandon saw her green panties and got even more enticed.

"Looks like somebody is excited." Marble giggled as she's a bulge in his underwear. "This will excite you even more."

Marble unhooked her bra and let her breasts be exposed. Brandon soon felt how firm they are, making Marble moan. She soon slipped out of her panties, and laid down on her bed.

"I'm all yours, Brandon." Marble cooed.

Brandon slowly slipped out of his underwear and laid down on top of her. "Marble, I've been waiting for this moment. How about you?"

"I certainly am."

The two lovebirds started kissing each other and rubbed each other's bodies. Their passionate kisses were getting hot as Brandon started rubbing Marble's private area. This let out a moan of delight.

"Oh my." Marble moaned. "You know all the right spots to touch. Don't you?"

"I sure do." Brandon replied,

Suddenly, he felt his stiff member being grabbed. Marble just giggled. "You're not the only one who's very touchy."

Brandon soon got devious. "I got the solution for that."

Brandon soon got a sash from an old robe he used to have, and gave Marble a command. "Raise your hands."

Knowing where it's going, Marble raised her and and allowed Brandon to tie them together. After tying the other end to the bed, he was ready for his next move. "Time for the big event."

Soon, Brandon started thrusted in and out of Marble. With her hands tied to the bed, she can't move them. This feeling of helplessness is getting her excited.

"Oh my." Marble moaned. "Keep this up. It's feeling so good."

"No problem." Brandon said between breaths. "Time to pick up the pace."

He started to go faster and drove Marble wild. They both started to breath heavily as the action heats up. Just then, Marble feels like she's ready to explode.

"Brandon!" Marble called out. "I think I'm ready to gush!".

"Me too." Brandon replied. "This is going to be a big one."

With one big thrust, Brandon gushed his juices into Marble. The youngest Pie sister screeched loudly as her juices spray out. When the action stopped, they soon felt exhausted as Brandon detached from his lover.

"I-i-I never screeched so loud." Marble realized. "That was amazing."

"Not as amazing as you, Marble." Brandon replied as he untied her hands. "Looks like I got you out of your comfort zone."

"And, I have no regrets."

Marble soon cuddled Brandon as they lay on the bed, very happy for this moment. The next day, Marble was lounging on her bed as Limestone walks in.

"I heard you really hit it off with Brandon yesterday." Limestone said proudly.

"I guess I have." Marble replied as she rubbed her butt.

"Something tells me there was more to it than you making love to him."

"You're right about that."

Marble blushed as she remembered what happened next.

Flashback

After putting his boxer shorts and tank top back on, Brandon took his sash off the bed and tied Marble's hands behind her back.

"What's this all about?" Marble asked.

"Well, babe." Brandon said. "Our session left my bed a little messy. So, you need to be punished."

Setting up his chair, Brandon put Marble over his knee and began to spank her. Although this punishment hurts, Marble is still grateful for this night.

End of Flashback

"I'm surprised he didn't use a ball gag to keep my mouth shut." Marble said humorously.

Limestone hugged her happily. "You've grown up well. That's for sure."