NPC.

Sometimes unimportant person is the most valuable.

What do you think the most powerful one in the game? Last boss? Minions? or Your Character?

Nah, I think the most powerful one is NPC.

They're the one who filled you with anything you need for the game, EXP, LV, anything that can make you journey easier.

Like their name NPC, Non-Playable-Character, they can't fight you, like you can't fight them. Powerful right? They don't have DF or AT, but they invincible, the one who can defeat them is the story itself, not you.

But how about someone want the NPC to be a Main Character? It's that wise? Maybe, maybe not.
But of course he just don't care about the rule, he always play with the rule and just died in the end.

He now wanted the Mercy, he now wanted his hope, he wanted you to be his hope, but sometimes the rule can never will break, but sometimes we have to be greedy for what we wanted, so Sans didn't care if the world destroyed, he just need his hope back, hope to survived this satan *sshole, and this evil loop, and with this only proof you existed, he will be come to you and drag you to his life.

The cover isn't mine, it's belongs to the respective owner.