Full Time War Spirit

This is a continent where the strong are respected. Everyone has a war spirit and can cultivate other war spirits. However, they can only cultivate one at most, which is a dual-system war spirit. However, there are always some special people who are born with dual-system war spirits. From the early days of the War Spirit Continent, there have only been less than twenty dual-system war spirits. Since then, no one with three systems or higher has appeared. But this is how he came to this world with all the systems.