"In Woods Of Lies" - Undertale and Doors CROSSOVER

"Chara. Chara.. are you here?..."
But nobody came as Frisk called.
Soonly a sound of doors opening could be heard.
"Chara, is that you?"

Undertale and Doors crossover.

Young human, Frisk lives in a cruel world where they either kill or kick out the sick, where other races than white are tortured and overall, in a really bad world.
Humans world had win a war only few years ago, and noone really knows where the monsters went. Did they just die out of their curse?...
Chara, Frisks sister had fallen really sick not so long ago.
But, their parents had no mercy and kicked her out, leaving her to survive in this cruel place. Chara then just vanished. Frisk, Determined to find his sister goes after her steps and ends up in abandoned forest.
There he meets the last survivors of monsters race and 7 children.But the monsters are seeking humans souls so they can fix themselfs and Frisk and the children are in constant danger. There are 3 paths Frisk can choose.
1. Sacrifice.
2. Kill.
3. Abandon.
Each path has it consequences and Frisk is free to choose. But how long will it take until Frisk fully realizes their power and decides to experiment with fate?
Soonly after, Frisk realizes something horibble.

No matter what path you choose, you will kill her.