Frisk is closer to the right answer than they think, and not even just in guessing that this is a Sans. The comparison to an Amalgamate is not an inaccurate one.

"Yeah. Better." In this, they are entirely agreed. Even if he were truly new here, that much would be obvious. Sans half opens his eyesockets to stare out at the garden around them. Even now, he can admire it. There are definitely worse places to get stuck outside.

"Sometime. Thanks." He nudges the tip of his snout up against their arm. It's probably the safest alternative to a head nudge right now. "I'll be here." It's not as though he'll be hard to find like this.