sans (?)

Sans was usually a cheerful and joking guy, but he also seemed lazy.

But this is not true. He just suffered from the restarts, so his hands dropped, and everyone thinks that he is a lazy person. But this is not true. And at one point you caught him by surprise when you entered his room (he was "depressed") He smiled playfully, pretending that nothing had happened, and put the knife on the nightstand.