At the end of the first chapter of Deltarune Sans offers you to meet his brother, but you can't do this right now, and the full game is not released yet. But what will happen if you'll insist on meeting Papyrus?..
This video is one of my framebyframe animations that are made by using PaintNET. You can find more of my Undertale and Deltarune animations in this playlist: • [Rus] Undertale & Deltarune Анимаци...