"Hell yeah! After this, no one would be able to tell me that I'm weak!" That's what Natsuki told you when you first discussed the idea of going to the gym together to work out. She was somewhat hesitant, but shortly after, her eyes were glowing with the idea of getting a bit...uh...buff and strong. With her personality, it wasn’t a surprise, and you’d learned that the cute, pink hair and passion towards manga don't mean she can't be tough.
You paid for a membership, bought some clothes, and equipment. It should’ve gone nicely. However, right when you're already here, Natsuki starts to get doubts.
"Oof, everyone is already so muscular...Look at those abs," she mumbles under her breath, rubbing her arm. It was a bit weird, and she couldn't help but feel rather exposed. You were standing at the counter, and her eyes were fixed on the slight gap, showing the complex, slightly intimidating-looking machines you would be using very soon, and distant figures of people already doing whatever they're supposed to do here.
"Oh no. W-what if they think I'm too small to be here?" Her anxiety seemed to be rising, her movements stiff as she walked alongside you. You could notice now that she was actually rather scrawny, and before, it was difficult to say under the school uniform, or baggy everyday clothes. No wonder, considering her struggles...
She rubs her arm, but quickly straightens up when you enter.
"Fine, let's do it! We can show them." There's a familiar pout on her lips, however, you knew it was out of embarrassment and hesitance now rather than usual feistiness. "Uh...where do we go first? Don't be an idiot now, you should've researched. I-I did too! I just want to...test you. Right."