Smol bean = Sans
Medium bean = Underfell
Tall bean = Gastersans

So the three beans where out for a walk when G spoke up breaking the silence "Can we talk for a moment on a serious note?" He asked seeming worried about something. The two smol beans looked up at the tall bean "If I was to go. Do you two promise to limit your arguing?" G asked softly looking up at the sky.

"Probably not, but why are you asking?" Underfell asked with a snarky attitude. "Just curious" He said quietly. "Will you two take care of Y/N? And Papyrus?" Gaster asked. "Pfft of course!" Sans said confidently. "Good, glad to hear that" G chuckled softly with a small weak smile

Sans and Underfell both looked at each other "how long will you be gone if you did go?" Sans says quietly "I... I can't quite say" his response had a slight stutter as the sound "where would you be going?" Underfell asked.

"W-well somewhere where I could never see you again..." He said quietly this time his voice cracking. A sound in the leaves and the two smoller beans activated there powers instantly.

Gaster smiled softly "t-take care of yourselves ok? Someone truly loves you" the two turned to see G suddenly turning to dust they didn't ever see it go by. Chara smiled darkly as she stood watch from the trees, the blade marked with black and gold blood.

Tall bean smiled a little and two began to cry "NO!!! I-I need you here" Sans wailed holding onto the big bean as he collapsed. Half of his face fading to ash, "I... I can't do anything without your help" Underfell felt a termoil of sadness wash over him as he collapsed holding onto his brother.

"H-hey, don't cry. I... You boys will do fine just be good o-ok..." He coughs holding onto his little beans as a white light came over him "be good, both of you... I love you..." He faded to dust in there hands.

Underfell looked at the dust in his hands don't cry don't.... Dont... Suddenly Underfell was overcome in tears and a Grabbed onto smol bean and sobbed into his shoulder.

Sans took Underfell into his arms as the two sat in tears as Chara walked out and there eyes lit up. Suddenly a giant Black Gaster Blaster Appeared, it charged up with a yellow light "you had to go with a bang didn't you" Sans chuckled as the Gaster Blaster struck Chara before they even had a chance to flee. The Gaster blaster then purred and faded away.

Underfell sobbed like a baby I'm Sans arms as the two grieves the loss. "We have to be strong Underfell" Sans muttered. "I wasn't crying" Underfell pouts shoving off Sans and whipped his eyes that was stained in tears.