Fraternal Determination

A Determined version of Fraternal Insanity. Could be called Mirrored Determination 2

Story
Dtale!DustBelief Papyrus was walking around snow then looking for more he made it to the bridge it was about to go into the ruins until something behind him said just DIE then the fight begin

Phase 1 Determined Retribution
InsanityBelief!Dtale Papyrus use the massive wave of Bones and some of them hit Dtale!DustBelief Papyrus he used blasters against Insanity belief!Dtale Papyrus until InsanityBelief!Dtale papyrus use a ton of Bones along with blasters and his brother's head than stabbed Dtale!DustBelief Papyrus and then dustbelief died

Phase 2 Interstallar Determination
Dtale!DustBelief Papyrus comes back from dead and says it's not too easy you just kill me like that anyways what do you think about BONES then the fight begin again InsanityBelief!Dtale papyrus couldn't even get one hit on Dust belief he got knocked all over the place and even stabbed by his own brother's head Dtale!DustBelief Papyrus was not going easy he knocked them into walls use the blasters and used bones with blue bones in Orange bones then he managed to kill InsanityBelief!Dtale papyrus

Phase 3 broken determination
InsanityBelief!Dtale papyrus came back now he is going all out the fight began so much bones and Madness and blasters So Much Madness there was so much craziness Dtale!DustBelief Papyrus summoned a huge bone. InsanityBelief!Dtale papyrus summoned a huge bone in a shape of a sword they both ran at each other and stabbed each other and Dtale!DustBelief absorbed all of the determination and the soul and InsanityBelief!Dtale died.

Eternal Madness
Dtale!DustBelief started to feel weird and was being corrupted but before he got corrupted, he went to the lab and tried to kill himself before he could be corrupted so he launched himself to the Core. However this did not work since he got corrupted but little of a skeleton touched the Core which made an explosion so big. It made the Underground be destroyed. Now that he is on the surface he killed everyone and then went back to the human and the human will have a ETERNAL MADNESS.