How do i find the last location?

Repost

Undertale 6th anniversary. Im playing dont forget, I know my name is silly, but it's my old df account, I'm already at lv 17

SOSORRY! Miku

I just think this design is soooo cute

Not by me, but is the canon designs

Credits: https://underfell.tumblr.com/

another niko render

Idk....

Ok.

Challenge for me: when searching on Pinterest, the first image that appears needs to be drawn or placed on the original character (OC) and this is the result:

I dont get it, how did i got this trophy??!