Undertale React to NIGHTMARE!SANS VS NIGHTMAREMODESANS (Request?)

Credit to Revolver Animations:
• NMM Sans VS Nightmare ...
Song from the start:
Touhou 6
Shanghai Teahouse ~ Chinese Tea
Embodiment Of Scarlet Devil
Music Box
• Chinese Tea/Touhou Kou...
Btw, I'm only using the Undertale Crew just for this once.
I know there someone who would request me this ,so I just put (Request?) in the caption
#gacha