"Hmm, diet...?"
She took a bite of the cupcake, washed it down with a starf smoothie next to her, and put the rest in her mouth in one go. While biting, she replied to him.
"I don't think it suits you. You look stronger with your hefty, plump body, and I think it suits you better."
She swallowed it while muttering.

He was at his friend Kangaskhan's cake shop. The reason he was at the cake shop, even though he had decided to go on a diet, was because she saw an ad for his smoothie and wanted to sell it in her own shop. She also wanted to create a new menu using it. And the reason she was at the cake shop was because of Fattytober's prompt... that's all I can say. In other words, it was a coincidence.

"Besides, it's going to be hard for you to get back to your old state. Sudden weight gain and loss isn't good for your health."
Whether it was for his sake or because she wanted to see him get fatter, he replied optimistically.
He says seriously without taking a bite of his cake.
"But if I continue like this, it will affect my battling life. The next mini-contest is coming up soon. I need to diet before then!"

"Hmm, diet...?"
She took a bite of the cupcake, washed it down with a starf smoothie next to her, and put the rest in her mouth in one go. While biting, she replied to him.
"I don't think it suits you. You look stronger with your hefty, plump body, and I think it suits you better."
She swallowed it while muttering.

"Hey, how can you do the same thing as before? You've already eaten your cake and smoothie!"
"Ah!"
"That's mine! Give it back!"
Chuckling apologetically, she prepares another set of cake and smoothie for him.

He pulls himself together and says, "So, I think this smoothie can be used for dieting." while scratching his stomach.
"Hmm, why is that?"
"This smoothie is packed with muscle building and other energy. It's also useful for building a strong body."
"But isn't that excess nutrition making you bigger up, down, left, right, front and back?"
He couldn't deny it. He unconsciously looked at his stomach, where his hand was resting. His pulsating, white pot belly was undoubtedly the result of that excess nutrition. And... he hadn't noticed, being distracted by his weight, but he had definitely grown taller. Up until now, he'd barely been able to see the top of the display case at eye level, but now he could see just fine even if he leaned forward a little. But height isn't really an issue.

He explains, bashfully. "But once I've built a strong body, it will be easier to do more intense activities. I can burn off the calories with that momentum..."
"Isn't it fine if I can build a strong body?"
"But I don't want my fat to hinder my movements! That's why I lost the last competition! So I'd better get rid of this fat!"

"Hmm, diet...?"
She took a bite of the cupcake, washed it down with a starf smoothie next to her, and put the rest in her mouth in one go. While biting, she replied to him.
"I don't think it suits you. You look stronger with your hefty, plump body, and I think it suits you better."
She swallowed it while muttering.

"What are you doing! My cake again!"
"Oh! My bad!"
He was fed up and finally showed his feelings. "Why should I do a comedy skit with you at a cake shop?"
"Because dat cave tokage couldn't come up with anything."
His rage heats up. Anger at being in a cake shop, humiliation at losing the contest because of his body shape, and even at smoothie for causing him to be like this, and at fate for making him addicted to smoothie. Everything goes round in his head, and he shouts, "It's all  MistyMistmi's fault!" She looks stunned.

He cools down, breathing heavily. It's better to forget about today. It won't be a problem if you don't have a day today. Since dat cave tokage couldn't come up with anything, there's no harm in making up for it with a totodile doodle.
Let's refresh... He wanted something sweet, so he asked her for a cake and smoothie set. She agreed, picked up a cup, poured herself a smoothie, and took out another cake from the display case. And when she stood in front of him,

"Hmm, diet...?"
She took a bite of the cupcake, then he grappled her.
"Are you kidding me?! And for writing more than twice as much on this stupid story as Tok ever wrote before!"
"Oh, I'm sorry! Please don't be mad!"
I'll apologize too.
=====
It's Day 8. This is a parallel universe where I was successful in drawing and writing day8.
This is a really terrible piece of work. I'd like you to just forget about it this time. Kangaskhan may come out in the future though.

The story was written in a rush, so there are probably some strange parts in their conversations. I might rewrite it.