Music by ‪@spaceboi0321‬
Art by ‪@Warner1112-Painter‬
Spectrum by ‪@ParkSuhyunMusicStudio‬
Chasing Kou by hidekazu sakamoto

I made this theme thinking about the pain and hatred in the process of Sans becoming a killer.

This song will come out if Killer Sans and Frisk (player) meet in Snowdin in the middle.

Undertale: To Killer

Also I made this song for Megalovania and Chasing Kou's mash-up.
cuz The name of The movie with Chasing Kou is "Drowning Knife." and I thought this indirectly expressed the current mental state of killer sans