The demon king wants to know why the humans haven't killed him yet. He's not afraid to tell him, he says, since he dared to say so out loud. The reason he came here was to help the humans fight the demon king, just like the others. He hates the meaningless killing, and he loathes him. The other humans are courageous, too, and they'll follow your lead. The only thing that can stop this disaster is for normal humans like you to join the fight. The mercy bow is the gift of the first creator, and it's time to use it to destroy the demon King.