User blog comment:JaphethMario/Frisk vs Madotsuki. Japheth's Fictional Rap Battles Season 2 Ep. 4/@comment-25012248-20151230172844/@comment-28938497-20151230174747

It was agreed with everyone I know of who planned to write an Undertale battle that they were all going to have Sans cameos. All of them. Every Undertale battle on this site.

But the streak's broken now.