The father of Land, Sea, and Sky! He has a bit of a doting parent streak! He is kind, wears a kimono, and is calm, thoughtful, and serious. He's a shut-in, but his frequency of staying in his room is normal, and he speaks normally at home. However, he goes outside incredibly rarely! He has cat ears. Height: 157cm. He speaks with an old-fashioned masculine tone. Male.

The Imperial Japanese Army! Extremely strong! He is dignified and quiet, standing 165cm tall. The captain of the Army! He wears an Army military cap and uniform, along with an Army cloak. He is incredibly cool. The older brother of Sea and Sky. He speaks with a blunt, masculine tone.

The Imperial Japanese Navy! A captain! He wears a white Navy uniform and a white Navy cap. Height: 172cm. He has a shark tail and jagged teeth! He is gallant and confident. He speaks with a rough, blunt tone. He is unsociable. The older brother of Sky and the younger brother of Land.

The Imperial Japanese Air Force! (Air Corps is also fine). He is full of curiosity, has a fluffy and kind personality! Height: 167cm. He always wears a flight cap and flight suit. He has a cheerful tone and is full of energy! He has bird wings and a tail. He speaks with a soft, friendly tone. The younger brother of Sea and Land.

He has a gentle, easygoing personality. The son of Land. He is serious and polite, using respectful language with everyone. He has cat ears and a tail. He wears a suit and is a corporate slave. He's addicted to energy drinks from overworking! Male. He speaks with a polite, formal tone.