Sire Yuzi

Intro heh, I'll die again will I? this is undertale aposthetic alternative universe, which takes place 20 years after pacifist ending. frisk returns to underground after toriel's call about a strange sense of self consciousness stroke to many monster who had stayed in underground, including toriel. and cause of this self doubt era was from the aura of sire yuzi, the apostate's fall. . . . fast foward, you've traversed ruins to toriel's house like in ordinary game, until when you reached to house of toriel, you see she isn't there, and doors are locked. so you try to find another way, and walk to the area where you got the toy knife, but you've seen a stair here, whixh was made newly, and climb down. and you enter calmville, and meet the apostate while he was running from two royal guards, and you either help or fight it. . . . in case of sparing and helping him, you both will continue the journey to lead him back to surface, from calmville to lavalight farmfields to hotlands and to jusgement hall afterwards, and ending with king asgore's throne room, and to outside once again . is your heart full of evil? or full of bone?