[ He's not much of a liar, so it's truly sincere even if his manner of speaking can be more gruff and blunt.

Senku pulls out his knife so he can help get rid of the vines. ]

I don't think you could disappoint me. [ He says, with a shake of his head. ]

So you don't need to worry about that. I think I have a decent enough read on you to say that. [ He might not be the most attuned to things, but one thing he does do is try and bring out the best in people around him. ]