I’m Allen Walker!”My life….is over…I’m going to die….

If there’s nobody left, even if the real world is saved, I will be destroyed… So please don’t die. Please don’t go away anymore… -Lenalee Lee

They’re butterflies because…well, he thought it was cool. They eat humans.

When you lost sight of your path, listen for the destination in your heart (Allen Walker, D-gray Man)