Benjamin, who died in the real world, was accidentally chosen to become a contractor of Reincarnation Space. According to the contract, Benjamin needs to venture into various dimensional worlds to obtain the Source of the World, which is used to maintain the Reincarnation Space! Ancient Forest, Doomsday city, Eternal Continent...... Benjamin is a cunning man, code-named ‘Foxshadow’, who will have exciting and varied adventures in various worlds!