Misaki | Deltarune Chapter 1 OST: 030 - Chaos King @Misakiu | Uploaded 2 years ago | Updated 2 hours ago
Deltarune is also a great game and I really do highly recommend it, you can play it at store.steampowered.com/app/1671210/DELTARUNE

Get the soundtrack at tobyfox.bandcamp.com/album/deltarune-chapter-1-ost