Senku chuckled lightly. "Well I'm not going to pretend I don't know something, why would I do that?"

He didn't notice how she was watching him really, and he didn't stop his actions to sharpen his bone into a knife. He also didn't mind that she kept her distance, in fact, he preferred it.

"I've been on the train for three and a half months. Not the longest person, but long enough."