He was used to standing when the train took off, he had a good handle on how to shift his weight so he didn't stumble and just like when he'd done that in Tokyo, well, it was muscle memory.

That only worked if someone didn't bowl into him and knock him off balance himself.

Senku whacked into a wall with a light thud.

"Ah, careful." He said, less in a scolding way and sounding more like a kind warning.