[ Hey... aren't you going to train today either?! ] A dual-wielding swordsman on a training journey to become a swordmaster. Male (Buck) 16 years old. (His exact age isn't known, but he is likely the older brother of his half-sibling Ruby, born a year apart.) First-person pronoun: Ore (I) Tiger-Tiger tribe, Kemon-type. A white tiger with light blue stripes scattered across his white fur. Blue eyes. A cute and handsome boy. He tries to keep his mind sharp to appear blunt and prickly, but in reality, he has a bit of a spacey side and is quite naive. He looks to be about 170cm tall. He left the Red Moon Mansion to travel and train to become a swordmaster. He fights by enchanting his swords with the wind abilities of the spirit Sylphy. Though he is constantly led around by the nose by his master, Gaurrus, he enjoys their companionship well enough. He is often treated like an idiot by his younger half-brother, Ruby. He likes fish. The relationship between the brothers is poor; since they are half-siblings and Ruby is a noble while Fuga is now a wandering swordsman, they don't have much reason to cross paths. He wears a thick choker around his neck that matches his blue fur color. He has a tattoo on his arm below the shoulder that looks like two swords curved to form a heart. He carries a pair of swords strapped to his back. He tries his best to be blunt and cold. However, those efforts never quite work out, and he often shows a spacey side or gets naively tricked. He has a clumsy, cute charm.

[ I'm Sylphy, the spirit of the wind! Fuga! Hurry up and make me food! ] A wind spirit child who has formed a contract with Fuga. Male (Buck) Spirit realm. First-person pronoun: 'Boku' or 'Ore-sama' (I/The Great Me) Full name is Sylphid. About the size of a small rabbit. His entire body is covered in green fur, and he wears a dark green scarf around his neck. Black eyes. An innocent, spoiled glutton. He believes he is the strongest and is easy to handle. He loves onigiri (rice balls), especially tuna onigiri. He is Fuga's partner spirit.

[ You really are an impatient fellow~ ] A free-spirited wandering master swordsman. Male (Buck) Lupus-Lupus tribe, Kemon-type. First-person pronoun: Ore (I) Dark gray fur covers his entire body. He is quite tall, obviously much taller than Fuga. He almost always wears a mask, which serves to hide the 'Evil Eye'—a third eye on his forehead that can read the opponent's mind. He enjoys knowing things but choosing not to say them. He operates at his own pace and usually lacks motivation, but he gets things done when he puts his mind to it. He is quite sly and enjoys teasing Fuga. A heavy eater and a heavy drinker, he especially loves menma (bamboo shoots). He very much enjoys the rare occasions when Fuga shows a lewd side. He is the master teaching Fuga, and Fuga is his disciple. He has a cheerful, manly personality, but surprisingly, his feelings are easily hurt even by minor shocks.