Today, it was a warm Summer Friday, and a exciting one. Graduation day. 

"Alright you two! I hope you studied well! Today's the big day!"

"And we'll come with ya."

Zepyr was sure, that his grades were absolutley perfect.

"Hah, Zeph' surely got the best grades in our class."

"Probably! We'll see today!"

After they had breakfast together, and went to school. It was quite busy, many families with their children. After a while, they both got called onto the podium.

"I'm nervous... you too Sebastian?"

"Sure. Just... stay cool. "

They got onto the podium, Torkoal was there, and the Alakazam too.

"Congratulations you two. You both graduated. Here, your certificates."

Their teacher  gave them their certificates.

"Oh, and you Zephyr..."

Torkoal spoke up.

"You, are the star pupil of TEC, one of the best since years! Have this, a special honorarium!"

Alakazam conjured a small golden megal on a red band.  On it was a  big star engraved. It was laid around hios cubby neck. He was absolutely stunned. He didn't expect this at all, he was so very happy.

"Geez, you absolutely smashed it! Congratz buddy!"

Sebastian pat Zephyr's head. After the applause died down, they got back to their parents in the crowd.

"Very well done Zephyr! "

"Good job lad. Ya impressin' me."

Zephyr's smiled  didn't fade for minutes. A few other Pokemon graduated, including a Evee, which evolved into a Sylveon. At home, Zephyr'sstomach let out a long growl.

"Hungry hm? We'll make you a special Pizza for today!"

Today was his happiest day ever. His body filling with joy, triggering something. Suddenly, he began to glow brigtly.

"Golly! Me boy!"

After the glow faded, Zephyr was surprised, he was much taller now! A Dragonite!
 
"Wow... you look great!"

"Now THAT'S a nice final evolution..."

He looked down, and it got even better, he had Arms!  And also a pretty big paunch.

"Arms! I... have arms!"

He moved them around a bit, and gave his brother a real hug for the first time.

"Oh... heh..."

Then his mother and father one too. He helped his mother preparing Pizza, and when it was finally done, he ate it. Without having someone else needed to hand him over food, he can eat much faster, and boy was he hungry. After he ate the entire huge Pizza, he ate some sweets with Sebastian too, watching a movie together in their room. After drinking an entire bottle of soda, he leaned back an pat is belly. He now realised, how fat he actually is. Sebastian noticed.

"Feels good doesn't it?"

The 'Gatr pointed at his brother's paunch.

"It... really does. I... I wonder how big it can get..."

Sebastian smiled and gave it a few pats.

"You know, if you need my help... I'll help."

"R-really? That... would be very kind!"

"Heh! Then you should eat some more! Here, have my bucket!"

Sebastian gave his bucket to Zephyr, it  there was still a lot of the special candy in it. Zephyr happily unwrapped and ate one after another, until every piece was down in his stomach. After another bucket of popcorn and a few chocolate bars, Zephyr fell asleep on the couch. In the next morning  he woke up. 

"Mmmmh... It seems I fell asleep last night..."

Zephyr let out a long yawn, saw his brother next to him, who was still sleeping, when suddenly his stomach growled.

"Hungry..."

Stretching jis chubby limbs, he got up from the sofa, noticing his weight.

"Phew... this is quite much... I like it..."

He slowly made his way into the kitchen, and it seemed that his parents were still sleeping, as no one was in the kitchen. He saw some leftover Pizza on the kitchen counter, and ate it. Though, he was hungry for more. He opened the fridge  and saw some leftover cake, and ate it too. Zephyr spotted a can of whipped cream, and of course, he shook the can and ate the cream too. Suddenly, his brother came into the kitchen, seeing his brother gorge.

"Heh.... good morning Zeph."

Zephyr was a little startled, getting caught in such a moment.

"Morning... I... was hungry."

"I can see that! Well... I won't tell mom or dad. You got some... cream on your chest."

Zephyr lookd down, and Seb was right, some of the whipped cream missed his maw, sitting on his chubby chest. He licked it off, and cleaned his mouth.

"You know, to celebrate our graduation, I'll spend some money on a Pizza lunch today!"

"That sounds amazing! I can't wait!"

The thought of eating even more, his stomach gurgled.

"Still hungry hm? Well, then grab some food, and go back to our room before mom or dad catch us here1"

While Zephyr walked back to their room, licking his claws and mouth clean, Sebastian brought some more for his big brother.

"Here, there was more cake left!"

Seb brought a plate with cake and sat down next to Zephyr.

"Would you mind if I.... fed you?"

"Uh... I wouldn't mind."

Carefully and a bit nervous, Sebastian slowly fed a piece of cake to his brother, who really enjoyed being fed. One piece after another vanished in his chubby muzzle, rubbing his fat paunch satisfied.

"Mmmmh.... that was good."

"You ate it all! My..."

Curious, Sebastian slowly moved a hand towards Zephyr's belly.

"Mind if-"

"Go for it!"

Still hesitating for a bit, the Gatr slowly placed his hand on his borther's belly, the hand sinking in a bit. 

"It's so..... soft."

Sebastian sgently moved his hand across the doughy surface, causing it to jiggle slightly.Zephyr's stomach grumbled silently, Sebastian feeling it as well underneath his hand. Slowly getting used to it, Sebastian started to gently knead his borther's belly, realising how fat he really is.

"Wow.... and you really.... like this?"

"Uh.... yeah. I think. Feels good.  I like to feel heavy, to eat so much..."

Sebastian continues staring at Zephyr's belly.

"Honestly... I could use some more food. Would you...?"

Suddenly, something hit Sebastian that changed his mood drastically. He quickly withdrew his hand from Zephyr's belly, standing up from the sofa.

"I... I need some fresh air..."

Seb left their room, nervously. Zephyr felt bad. He felt like he forced Sebastian into something, without knowing. His brother sudden reaction killed his hunger as well. A sudden tiredness overcame tthe big Dragonite, so he went to his bed, which creaked some, and slept for some time.About an hour later their mother came into the room, waking up Zephyr.

"Good morning honey, it's breakfast time!"

Waking up again from a short sleep, Zephyr slowly got up and walked into the kitchen, Seb was already there eating pancakes.

"G'mornin' Zeph."

The male Gatr said, while browsing through the newspapers. Sitting down on his chair, Zephyr hesitated a little before starting to have breakfast. The parental instincts of the two Gatr's kiciked in, noticing their sons acting strange. 

"Is someting wrong with my pancakes dearies?"

"No."

They both said in unison.

"Well? What is it then? You bot usually would be done with half of these pancakes by now!"

"C'mon. You two can talk with us if somethin's wrong."

"No, there is nothing wrong!"

Seb was upset, raising his voice. Then there was silence for some time, only Zephyr's munching could be heard, with a short and silent rumble from his belly.

"I'm going outside."

Sebastian got up from his chair, not finishing the pancake he was eating.

"But be back before lunch honey!"

The rest of the day Sebastian and Zephyr didn't talk to each other, leaving Zephyr feeling guilty, and Sebastian uneasy. After they had dinner, Seb went outside again, and Zephyr went into is room. He turned the TV on, and as he was about to sit down on the couch, he noticed a small bowl next to his bed. There was a small letter on the bowl as well, Zephyr picked  the bowl up, sat down on the sofa and read the letter.

'Hey Zephyr, sorry for acting so strange this morning. When I looked at your belly today, something overcame me, I was sooo curious about how it feels... I noticed that you got so... big over tha last couple months.How you have been eating more since I met you... The sounds your belly makes after you had a lot of food... I was just overwhelmed with curiosity, I couldn't help myself. I need some time to get things sorted out, but please... don't be mad at me. I'm sorry.  To lighten your mood, I got some candy for you. I hope you understand.'

"I understand Seb, don't feel sorry."

Zephyr whispered to himself. Putting the letter aside, Zephyr began to eat one piece of candy after another, not noticing how filling it was, as he was distracted watching his favourite TV show.When the bowl was almost empty, Zephyr realised how full he was feeling.

"Oof... I almost ate all the candy without noticing... let's eat the rest, it'll make Sebastian happy."

Slowly stuffing the remaining candy into his belly, Zephyr fell asleep  with a hand on his bloated paunch, just when he swallowed down the last piece.

About 40 minutes later, Sebastian was sitting outside in the front yard, thinking...

"Why am I acting like this? I should be honest about how I feel, how I feel about Zephyr... Instead, I am running away, making him feel guilty...I hope he likes my present and forgives me for that."

His stomach let out a silent rumble. Sebastian looked  down to it.

"It almost sounded like Zephyr's.... but it looks so much bigger..."

He rubbed his chubby paunch, kneading it a bit too. 

"He's so much bigger than me... Though I am sharing a lot of my own food...I should get inside, it's getting late."

Walking back inside, he saw his parents watching TV, letting them know he's home. He slowly opened the door to their room, walking inside carefully, he noticed that Zephyr was asleep. Moving closer to the sofa, he saw the bowl he left for his brother in Zephyr's lap, a little smile spread across his muzzle, when he noticed it was empty. A sudden grumble from the big Dragonite's paunch caught Seb's attention. He saw that Zephyr left a hand on his belly, it was sinking into the fat a bit. Sebastian was tempted once more to touch his brother's belly. He decided to carefully put the hand aside, and noticed how even the hands of his brother were a bit softer. Giving the big belly a few pokes, patting it carefully, and kneading it some. Sebastian  liked it how soft it felt. Then, his own stomach growled.

"Hungry... I should get something to eat."

Sebastian walked back to the kitchen, noticing his parents already went to bed. That was his chance to get some nice food for himself.Sneaking into the kitchen, he saw the leftover pancakes from lunch, so he decided that'll be the first thing to eat.Grabbing a stack of three, he took a big bite ot of them, eating the stack entirely in a few more bites.Then he ate another three, and the last two as well. He felt stuffed already, as he licked his slightly dripping with grease fingers. Looking around a bit further, he found a few donuts and muffins on the kitchen counter. Stuffing the chocolate  confections down, he felt like never before. He was satisfied, as if something deep inside him was finally filled. After disposing of any evidence, Sebastian sneaked back into their bedroom, finding Zephyr still asleep. e laid down on his own bed, looking down at his middle while he laid on his back. It never looked this big to him. He rubbed across  his bloated middle, feeling how it worked down the food he ate.

"Now I really understand how Zephyr feels... this is way too good."

He thought to himself, smirking.

3 Weeks passed since Sebastian's change of mind.He tried to eat more than usual every day, and the summer holidays were just perfect for that. He ate plenty of ice cream with his brother, they went to a couple fast food restaurants occasionally, and the usual not very healthy breakfasts, lunches and dinner with their family. After today's dinner, Sebastian went into the bathroom to have a look a the mirror.His belly stuck out a bit further now, Further up, Sebastian noticed he'd developed moobs, and his face looked a bit fuller as well. His arms grw a bit thicker, like his legs and tail. He was definitely fat now.

"This seems to work.... nice!"

Sebastian gave his bigger paunch a few pats, causing it to jiggle.

"Sadly the holidays end next Monday... that means less laziness, and less food... I have to keep going...!"

Motivated by his gains, Sebastian proudly  left  the bathroom and headed for his room he shared with Zephyr. His brother sat on the sofa, eating some ice cream from a tub.

"Oh hi Seb! Wanna join me watching TV?"

Zephyr noticed his brother, sending a friendly smirk his way.

"Hi Zeph, sure, why not?"

He sat down next to his brother, the sofa creaking a little under their weight.While Zephyr was busy eating, Sebastian looked at is brother's belly, and noticed he gained weight as well. It seems he's a natural at this. After finishing his tub of ice cream, Zephyr let out a burp and gave his big belly a few rubs. It gurgled nicely while he did so.

"Hey Seb, you want some candy?"

Seb didn't expect his brother to speak to him, he was still looking at Zephyr's belly. 

"Uuh... sure! What do you have there?"

"Let's see..." 

Fortunately, he was searching through a bag for somethng.

"I got some chocolate bars, muffins... some gummy worms... "

Zepyr kept counting, but Sebastian was staring at his brother's paunch. 

"I want to be as fat as him..."

He thought.

"Seb?"

"Uuuh... I'd take the chocolate! And muffins!"

"Sure buddy! One sec!"

Zephyr took a couple bars of chocolate and packs of muffins from the bag and gave them to Sebastian, who eagerly unwrapped them and started eating.They spent the rest of the evening together on their couch, stuffing their mouths with fattening goods.In the next Monday morning, they woke up to  delicious smells.

"Mmmh... smells just like..."

"... Pancakes!" 

They said in unison, rushing out of their beds heading to the kitchen.

"Good morning my darlings! Ready for school again?"

Sebastian let out a long groan.

"I guess... the holidays were way too short!"

"Yeah! Seb's right!"

Their parents chuckled.

"C'mon, yya both got this. Ya'll rock it!"

The two children looked at each other, and smiled.

"Yeah, we got this, right Zeph?"

"Exactly Seb!"

They finished eating breakfast and were brought to school by thieir parents again. There, they were greeted by their teachers who explained new things. After that, their next lesson was PE, and Machamp ws eager to see his newly graduated students.

"Welcome back students! This year, you will learn new and exciting things! Let's get started by warming up with some stretches!"

Just after they got started, Sebastian nooticed how it was a bit more difficult than before the holidays.After that it was time for them to run a few laps around the sports ground.just after a few moments, Sebastian began panting already. As well as Zephyr.

"This... this is tough...!"

Sebastian said under his heavy panting.

"It is... harder than I remember..."

They both slowed down and Sebastian took out a chocolate bar from his tighter than usual training jacket's pockets. 

"You want one too buddy?"

Zephyr was surprised by his brother's sudden offer, but he coudln't turn it down.

"Sure! Thanks!"

They started to comp dowtheir cocolate bars and teir tempo slowed further down to a casual walk.  As they walked, their chubby bellies jiggled up and down, and Zephyr noticed that Sebastian was looking  heavier than he remembered.