The Undertale Version of Kagerou Days by Sunnyisrandom these are the ending lyrics that particularly inspired me.
"But a story is a story all the same
And today is the time to turn over the last page
Far away and soaring above this underground cage
Intercepting the stab that was meant for you
I pushed you aside to protect you from your fate
The white snow around us, the soul of the murderer
now share the same shade of red
You just can't take it
In this cruel world, is it kill or be killed?
I believe in a good end" those words ring through your head
Maybe this winter day has finally gone away
But that's all I'll say so this is where it end now
August 14th alone in his room a skeleton just woke up repeating just the same
Muttering in tears
Not the end I was hoping for.." I'll just have to try again
I will stay determined."
"SANS!"
Papyrus watched in growing horror as Sans collapsed to the ground, blood pouring from the slash that the hu-murd-hu-no, murderer caused. They killed Sans, and he could do nothing as he faded into dust, a sad smile on his brother's face. He was quiet but was easily heard as he whispered his final words, Papyrus growing cold and analytical. How dare that thing kill his brother? As he was about to summon some bones to kill it instantly,
"i saved you... ha...ha"
"Reset"
The world turned into dust.