(This is gonna be about sans this time)
Sans P.O.V
It was night. I was staying awake for frisk going to bed. Until I hear voices, it was Mable and........no it can't be. I destroyed her. How is this possible. Why? I thought. It was Chara and Flowey. I panicked so hard like my mind was going to explode. That fake smile, pretending it's fine, making Mable being part of the family?!. I took a breath and went to my room. I walked in front of the mirror and put my hand in it, thinking. ......how can that be possible?! I thought. Then I heard laughter. My left eye went blue than the other. I took a peek on Mable's door.
"But what about sans? He'll figure it out quickly!" She said. Chara was in a mirror while Mable was talking to her. Flowey was on the ground also talking to her.
"Don't worry about sans. Pretend everything is a beautiful day...." Said Chara. I can feel Mable is becoming a shadow of Chara. She felt being used....
"But--" but Flowey interrupted Mable
"Pretend! Remember our deal?" She said. Deal?!!! I thought. I can hear Mable's thoughts. I like sans and papyrus and all others but I can't......betray them! What if sans....kill me. He can't show me mercy. She thought. I feel her. But I have to do the right thing. Even if I fight her, even Chara. Then Mable started panting
"I'm tired of being used, I'm tired of being beaten up, I'm tired being teased....I. Am. Tired. Of. EVERYONE and EVERYTHING!!!!!!!!" She shouted. Then Chara and Flowey smirked. Mable's eyes went white, pure white. Then her right eyes had white flames coming out.
"Hehehehe.....hahaha....hahahahahahahahahahaaaaa!!!!!!!!!!!!!!!!!" Mable Laughed so hard that her heart became Black. No...she....can't.... I thought
"Wait...Black?" I whispered.
"What??!" Said Mable. I left and head to my room. I saw Mable left her room and smirked in front of me. Even she didn't saw me. I saw a save, fight, mercy, act, and pause button. I clicked act.
"Mable...how could you....!!!". Then my left eyes turned blue and the blue eye flame came out.