Where Yesterday Leads

"Senku has looked over the contents of this box more times than he can count (48 times) since he originally found it, and remains no closer to an answer. Frustration is a feeling that Senku is familiar with, but it's been a long time since it felt so potent.

He lets out a heavy sigh and rubs the bridge of his nose. 'I don't get it...' he mutters, yet the sound of his failure seems to echo around the empty lab. 'What the hell is this?'

It doesn't take long for Senku to rearrange the contents and place them back into the small box. He shuts the latch and carefully places it back into the corner of his lab, where it will go back to sitting inconspicuously for who knows how long. "

Challenged by a complex puzzle and lingering homesickness, Senku must confront his past to find a new path forward.