The extra is a fox eyed jester - Chapter 48: Targets

Abandoned on the battlefield, all he could do was endure the hellish life. He had no family to rely on, as they had turned their backs on him.A soul from the battlefield, Lucavion Thorne.But apparently, he was a lot more than a mere soldier, as fate had many things stored for him.A soul from Earth....When they merged, he realized.He was a one-chapter villain whose sole purpose was to serve as a background setting for the protagonist's tragedy.But was he truly a one-chapter villain, or did fate still have some tricks up its sleeve?Watch the story of Lucavion Thorne as he finds the purpose behind his transmigration and discovers his own fate.

On his coming-of-age day, Argolaith’s mistake bound him to a mystical magic unseen in the world. As his powers grow, they threaten to reshape the realm—but can he master them before they bring ruin?

Caution: This novel contains R18 content. Doomsday had arrived overnight. Zombies roamed every corner and humanity had suffered a massive setback.

The hero who was killed by the demon king ended up reincarnated as the son of the one who killed him! Thus began the life of the hero who donned in the mask of the ideal demon prince to topple his own kingdom while doing his best to prevent anyone from discovering his identity―― But to do that and blend into the demon tribe society, he had to kill his former comrades. Nevertheless, to become stronger, to save humanity, he had to walk through all kinds of paths of carnage! This is the tale of the demon race’s fake prince destroying his own kingdom.

O Hero, Trample Those Who You Should Protect!

TN: Most part of the other character in the novel is depicted from a non-human perspective so expect something that is completely different from the common sense of human.