He is feeling sad or worried, he just finds help but nobody came, he has no brother in this universe, or does he know, no monsters left, just him, he cannot talk or lazying around, he's not slacking off, he's just alone.

Wearyheart oc by @takwa764

Negatale by ArtsyGum

Undertale: Saddened World (my negatale take) by me.