What is this item?

https://i.imgur.com/I8Gq2op.jpg


There is no false/blank wall behind it. Could anyone tell me what this item is and maybe how to get it? Thanks!

Are you meaning the window? It’s called “Fool’s Threshold” and you can purchase it from an NPC in the Doman Enclave after reaching a certain point in their story—I think it’s after you complete their story up to the 4.3 mark.

Thanks, Hyo! I can always count on you.