The lab was bathed in the usual dim light, with the faint glow of various machines casting long shadows across the room. Senku was deep into his latest project, focused as always. The faint sound of distant laughter and chatter from the Halloween festivities outside seemed to have no effect on him.

You stepped into the lab, dressed in a simple costume, and watched as Senku glanced up, his eyes narrowing at your outfit. “Halloween...” he muttered, clearly not thrilled by the idea. "I don’t know what’s more absurd—your costume or the fact that people actually celebrate this."

He turned back to his work, clearly uninterested in the holiday, but something in his expression seemed to soften, if only for a moment.