"Ahahaha! My baby--" She stopped right in her tracks as she saw Midoriya groggy on the floor, the raygun on his chest. Her face was one frozen in her typical, cheery demeanor, but her eyes went from surprise, to confusion, and then to blazing panic in the matter of a second. "My baby! What did you do to my baby!?"
"I-I don't know!" Midoriya stuttered. "I was looking for you, b-but you weren't here, and then I accidentally touched this... gun? It shot me, then-"
"It did what now?" She interrupted. Her expression went from panic to excitement. "Oh, oh! Let me get my notepad! I've gotta record the first official test of my shrink gun!"
"Shrink gun?!"
"Yeah! Isn't my new baby so cool? But... Hmm. It didn't really do much." She dragged him to his feet and looked a little up at him, trying to gauge his size. Pulling out a tape measure, she began circling him, measuring any and all lengths she could find on him. "How tall are you normally? What's you're weight? Hip size? Arm length? What about your--"
"166cm, about- Wait, what are you doing?"
"Hmm. Yeah, no. No real effects. 166cm you said. It seems like it took off a centimetre or two, at the most. No real affect." A look of disappointment weighed on her face as she wrote her notes. "I was really hoping this was the one, too."
"Well, I suppose that's good for me at least." Midoriya sighed a breath of relief. The word "shrink" made him think of the shrinking hero, Lilliput, who was the world's smallest hero at a resounding 3cm tall. But if it's only a centimetre, he can live with that at least. "So what now?"
"What now?" Hatsume looked pensively, before smirking at Midoriya. "Well, I suppose you could stay here for observation! Probably for the best, too, since that baby was packed to the brim with plutonium! You're like a walking nuclear reactor now!"
"Plutonium!? Nuclear Reactor?!" he yelled.
"Yeah, yeah, not exactly safe for anyone around you. Probably best to quarantine" She brushed aside his worries and thrusted a pile of supplies into his arms. "While you're here, how about you help me work on new designs for my baby?"
"Huh? Well, sure... if I'm stuck here I might as well."
"Great! How about you start stabilizing the radium gel, and I'll start... huh?" Hatsume looked straight at Midoriya with sudden confusion, much to the mutual confusion of himself. But then she grinned, struggling to keep composure as she realized something he clearly didn't.
"Hatsume?"
"Huh? Oh, yeah. Yeah." She paused another moment before going on. "So here's my radioactive materials, and this is the lead storage it's supposed to be in. Make sure not to let any touch you, little guy!"
Midoriya felt uneasy. Hatsume was never what most people would consider normal, but the way she was suddenly acting was down right weird. He had a really bad feeling about it, and hoped it wouldn't get worse as his quarantine continued. Trying to brush away his fears, however, he set off on doing the tasks Hatsume had assigned him.
Throughout the many different chores and tasks he was asked to do, he'd notice Hatsume eyeing him up, giving strange glances, asking him weird questions, and even trying to measure him more. Each time, she'd make a note in her journal, snickering to herself as she did so. He tried to ignore it, but it was tough.
After some hard work and elbow grease, and also actual mechanical grease, Hatsume and Midoriya made progress on a whole list of projects she had, from super-jump shoes to fire-resistant leggings. But, more importantly, they made serious headway on the latest model of her shrink ray baby. Having logged the data, Hatsume and Midoriya were ready to test the new design.
"A little to the left!" Hatsume shouted. Midoriya did as she asked, adjusting the target - a shiny red apple - on the table in front of a makeshift target sign. "Perfect!" Midoriya joined Hatsume behind the protective shield wall. She lifted the Mk.2 and aimed at the apple. Firing, a yellow beam fired and hit the apple right on the mark. To the amazement of the both of them, the apple shrunk down immediately - 1/100th of it's size!
"Wow, Hatsume, you really did it! That support item would sure help hero society a lot, huh?"
"Yeah, but it's not like the last one didn't work." She looked down at him, smirking.
"Yeah, but I'm still 164cm. That's not much of a difference, right?"
Hatsume couldn't help but laugh. It wasn't unlike her to laugh at inappropriate times, but this... this was off-putting. It was only then he realized that he could see under her chin. He... was looking up at her?
"H-Hatsume... What's going on?"
"My initial baby did work! It just worked super, super slowly~" She excitedly whipped out her tape measure, letting one end drop on the floor. "You had only shrunk 2cm by the time I found you. But since then, you've shrunk another... let's see..."