BFDI AND II ONESHOT BOOK!

Owed and Tested / Nickloon & Fantube

(Really short fanfic I wrote quickly because I was bored on vacation and couldn't sleep, it's ehh, but funny.)

Nickel finds himself in debt to Test Tube after she helped him finally confess his feelings to Balloon. To collect on that favour, she ropes him into being her test subject for a series of quirky mini-experiments. Nickel, of course, isn't exactly thrilled about being poked and prodded, but with how much she did for him, he can't exactly say no.

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"Thank you so much for doing this, Nickel! You won't regret it!" Test Tube beamed, practically glowing as she guided him into the sleek medical chair. Her grin stretched wide as she bustled about, laying out vials, clamps, and strange instruments that glinted under the overhead light.

"Heh, yeah, well... I didn't exactly have a choice, did I?" Nickel muttered, rolling his eyes with forced nonchalance. His legs swung nervously where they dangled off the chair, betraying his attempt to look calm. He had no idea what she had planned, and the uncertainty left him squirming. Still, how could he say no to her? After all the help she'd given him, especially with Balloon—he owed her. If it weren't for Test Tube's constant support, he never would've found the courage to confess how he really felt.

Speaking of Balloon, he hovered right at Nickel's side, arms crossed, watching every movement Test Tube made with hawk-like eyes. His worry was written all over his face.

"And you're absolutely sure none of these experiments will, y'know... kill him, right?" Balloon asked flatly, his voice edged with protective concern. Nickel turned his head slightly to glance at him, half touched, half embarrassed by how serious he sounded.

Across the room, Fan perked up from his post beside the monitors and equipment. Test Tube had insisted on having him there—a backup pair of hands in case anything went wrong. Fan adjusted his glasses, giving a reassuring chuckle.

"It's all for the greater good, Balloon. Just harmless tests! I promise we'll return Nickel to you in one piece."

Nickel gave a dry laugh at the phrasing, body tightening as he cast an uneasy glance around the room. The instruments looked anything but harmless, and the fact that nobody was explaining exactly what they'd be doing didn't help.

"Well... fine," Balloon relented, though his tone stayed firm. "But I'm not leaving his side. Not for a second." He angled himself closer to Nickel, brushing lightly against the chair as if to make his presence even more obvious.

Nickel looked up at him then, just briefly. For a moment, their eyes locked. Balloon's lips softened into a shy smile, full of reassurance, and Nickel's heart gave a traitorous skip. His face heated immediately, and he jerked his gaze away, cheeks burning.

"A-Alright then, can we please just get this over with already?!" Nickel snapped, raising his voice more out of impatience than confidence.

"Golly, you're that eager?" Test Tube giggled, twirling a pen between her fingers before jotting something onto her clipboard. Her laughter echoed through the sterile room, sharp and bright, making Nickel's stomach twist with both dread and anticipation.

Fan leaned closer, eyes glimmering with curiosity. "Honestly, I'm eager too. We might be on the verge of something ground breaking!"

Nickel groaned, slumping further into the chair. "Yeah, ground breaking... or bone-breaking."

Balloon squeezed the armrest of the chair and shot Test Tube a look. "If he so much as gets a scratch, you're answering to me."

Test Tube only smiled wider, eyes sparkling with scientific glee. "Oh, trust me, Balloon. The only thing Nickel will leave with today is knowledge!"