Frisk leaned on the box, preparing to walk down the Judgement Hall yet again. As expected, Chara manifested before them.
"Hey." Chara didn't wait for a reply-they knew by now Frisk wouldn't speak. "So... Are you planning on doing it again?" Chara looked at the knife in Frisk's hand. "Sparing him?" Chara grinned wryly. "You honestly seem to think something different will happen this time, huh?" Frisk looked away. Chara's face darkened. "You do realize how useless all this is, right? I mean, you've tried to Spare him... What... 30 times now?" Chara flitted closer, examining Frisk's face. Chara saw the familiar glint of Determination in Frisk's eyes. "And you STILL insist that something different is going to happen. Incredible."
Chara shook their head in disbelief, then reclined in midair, looking at the ceiling. "I'll admit, although I really enjoy watching you get your ass kicked by your ex-bestie, this is quickly getting old." Chara sat up again and looked Frisk in the eyes, expression hard. "If you Spare him again..." Chara's eyes closed. "Heh... I'll FORCE you to Reset." Chara looked at Frisk again, smile turning into a smirk. "I can do that, you know. I didn't want to... but you're leaving me no choice. You see, I don't want to be stuck here with you for all eternity."
Chara paused, looking down the hall with a pained expression. "We always come SO CLOSE to winning, yet every time you throw it all away. It's kind of painful, you know? So this time, why don't you just kill him?" Chara spread their arms out wide. "It's that easy. Sans dies, we move on, I finish what I came here for." Chara watched Frisk's expression again. "Or... You could Spare him again. And we both lose all of the hard work we've done." Chara waited, hoping for something- a frown, a laugh, a smile, a word... but Frisk only straightened and started down the hall again.
"I see." Chara vanished again. "Don't say I didn't warn you."
Sans was standing in the same position he always was, waiting for them. Frisk had seen it all before. He would say something referring to him losing count of the number if times he'd won, he'd say that Frisk deserved to go to hell, and the battle would begin again. Frisk braced themself.
"30." Sans said.
Frisk looked up in surprise.
"You've accepted my mercy... 30 times, now." Sans wore an odd expression. "29, now that's fine, but 30?" He shook his head. "Nah. That's too much."
Frisk's expression became one of shock. This was... new. They broke into a smile.
Sans looked at the ground. "You really mean it, huh? All those times you've tried to Spare me... You meant it."
Frisk let the knife fall to the ground, just as they had all 30 times before.
Sans stayed silent for a moment more. "... Then why?"
The world jolted, and Frisk found themself suspended in midair, their soul glowing blue before them. Sans glared at them with hatred, hand held high. "If you really mean it... Why don't you go back?! Why don't you Reset?!" He threw Frisk to the ground. "You obviously have a soft spot for me... You think you can keep me alive, let me tag along with you like some kind of sick pet while you destroy the world?!" He swung his hand to the side, sending Frisk skidding across the floor and into the wall.
"You idiot!" Frisk heard Chara hiss. "He's going to kill us again! Get the knife!"
"Or maybe that's not it... maybe you think if you keep doing this, I'll let you go past without you having to fight me? You're getting tired of our fight?" He sent Frisk flying up to the ceiling, then slammed them back onto the ground. "Heh... So am I. But I'm not going to let you just walk by." He released Frisk's soul as he prepared a Gaster Blaster. "I'm going to keep fighting until you feel like you have no choice but to Reset."
"Get the knife!" Chara screeched.
Frisk got up and ran... right at Sans.
Sans fired the blaster, but Frisk jumped over the beam effortlessly. They hit the ground running and continued their mad dash toward Sans.
"You don't have a weapon, what're you gonna do, hug me?! Heh... you really are a monster." He lifted Frisk, and their momentum sent them flying over Sans' head and into one of the pillars. "You think that just because you keep Sparing me that I'm going to change my mind about you?" He pulled Frisk back to face him, held in the air like a limp rag-doll. "That I'll decide that you really are a good person, and that you want to change?" He threw Frisk backwards into a row of bones, battering Frisk nearly senseless.
"Idiot!" Chara shrieked. "Get the damn knife!"
Sans walked over to Frisk, seeming to tower over them, despite his short stature. "We've given you so many chances, kid... Chances to change, to stop heading down this path." His eyes were dark. "You could have stopped at any time. Papyrus... He really thought you had it in you. But now it's too late." He lifted his hand, and Frisk's soul shone blue as they rose slowly into the air. "Stop looking for Mercy, kid. You won't get any from me." Sans closed his eyes. "If you really want to be a friend... then please... Reset. No matter how many times you Spare me, you can't make me live in this world on my own." Sans opened his eyes again. They were full of pain. "I can't... I..."
Frisk looked down at Sans from under heavy eyelids as his shoulders shook. "You can't make me live with all this. Not for all the Mercy in the world." He prepared another Gaster Blaster behind him. "Either Reset... or kill me." The blaster was ready.
"Get dunked on."
The laser fired.
The last thing Frisk heard was Chara's rage-filled scream.
Are you sure you want a true reset?
❤️ Yes No
The format didn't turn out quite the way I had planned, hope you still can follow it okay. ^^