"My personal theory is that the train is an A.I. of sorts, but we don't actually know. There could be someone, somewhere controlling it remotely. We've never seen staff." Senku reported.

"What each team does varies from mission to mission, but blue tends to deal with animals, in my experience and orange tends to deal with repair or technician jobs." Senku tugged at his own horrific orange collar. "Orange sees the least amount of combat, but it hasn't been zero on the few missions I've been on. Purple seems to be somewhere in between blue and red."

Senku, at least, believed the train could be listening to them, so he didn't think her motion strange at all.