The Captain

2 Assassin squad leaders

in 1834 a member of the Earth's protective force was formed that guarded nature and protected the endangered species of animals at that time and there were two people who led the army and they always faced challenges on the Battlefield

until they become the leader of the youngest and most powerful forces in the army until they are nicknamed the cold-chested killer.

they are two friends because they always face challenges together and they love each other.