After time travel, there is no system and no grandfather.

Just when Rock felt helpless because of his talent, he met himself in other worlds in his sleep.

Rocks in each world can share their talents!

Hogwarts Rock: "Good brother, this is my once-in-a-lifetime request. Please evolve into a Celestial Beast."

Agumon Rock: "Are you awake?"

Death God Rock: "You are right, but the Celestial Beast is a..."

Pokémon Rock: "My evaluation is not as good as Dilumon."

Naruto Konoha, One Piece, Bleach, Pokémon, Ultraman, Sword Art Online, Conan, Hogwarts...

All Rock: "What I have achieved today is all thanks to myself!"

Keywords: Simultaneous time travel, comprehensive comics, shared talents, clones