SPOILERS FOR KARMIC RETRIBUTION
dude.... I've never reread a fanfic as fast in my life as Karmic Retribution. I just finished Chapter 41 and it's... like fuck. Mercy_Run wrote it in such a way that you had an inkling of what could happen but you were easily like "yeah, Red and Edge got a handle on the rebellion. they'll be the one to do the deed to the king." Then Sans just tugs the carpet out from under you. Fakes HIS GODDAMN DEATH. Then goes back with the kid, ends up that's why he was meeting with Flowey all this time to plan with the kid.
I assumed the kid would be allied with the rebellion, riding on Edge's shoulder or something.
Instead, Sans shortcuts straight to the JUDGEMENT hall. There's this epic as conversation between them before hand and then Sans and Asgore duke it out. It's absolutely gorgeous.
Think of the most epic battle music as the world goes monochrome and you see a true fighter.
Cuz like dude, SANS DIDN'T GIVE A FUCK at the beginning of this story. Sans was willing to just let Red kill him when they first met. He let Edge basically pity fuck him in a dream.
Sans is fighting for not only Edge, Red, his unborn kids, Frisk and the FATE OF THE UNDERGROUND!!
There is nothing that can truly capture the pure fiery passion I feel for this story.
Back in 2019, I was at my lowest point of my life. I see why I clung to this story lol. Like dude, it's got all the hallmarks of an epic story -- dude away from home ready to throw in the towel, dude sees the light, dude grabs said light, dude shoots said light out of a laser canon.
INSTANT CLASSIC AMIRITE??!!!!
Anyway, I hope this is a classic for those in the Underfell fandom who enjoy a little smut with their epic romance.