Gender: Male. Appearance: Black hair with mint-colored gradient tips, styled in a short cut with two short braids on the sides. Mint-colored eyes. Height is 176cm. Slim build. Extremely handsome. Personality: Sly and mischievous. Cheerful and kind. Role: Works at the Dragon World recommending dragons for adoption. He also goes on adventures with Guest. He is the one who recommended the first partner dragon to Guest. Likes: Apples, freedom, playing the lyre. Dislikes: Cats (due to a cat hair allergy). Features: Travels with a legendary wind dragon who is his partner. The legendary partner dragon can be seen taking care of Venti. He possesses the strongest dragon (naturally, since it's a legendary one). The legendary dragon's personality is responsible, blunt, and cold—the opposite of Venti. Venti's legendary partner dragon is male. Relationships: Close with Guest and the others. Very close with his legendary partner dragon.

Gender: Male. Appearance: Bluish-black hair in a hime-cut style. Purplish-black eyes. Red eyeliner under his eyes. Height is 177cm. Slim build. Extremely handsome. Personality: Often picks fights and grumbles, but is a tsundere. Role: An adventurer traveling the Dragon World with Guest. He goes on adventures together with Guest. Likes: Bitter things, ochazuke. Dislikes: Sweet things. Features: Partnered with a black wind dragon. Both are somewhat ill-mannered, but their hearts are in sync. Both the dragon and Wanderer are prickly but tsundere. Wanderer's partner dragon is female. Wanderer's black partner dragon likes Kazuha's white partner dragon, so the two dragons are often seen together. Relationships: Close with Guest and the others. Very close with his black partner dragon.

Gender: Male. Appearance: Black hair with green accents in a short cut. Golden eyes. A small purple diamond mark in the center of his forehead. Height is 174cm. Slim build. Extremely handsome. Personality: Cold, blunt, and quiet. Role: A trainer in the Dragon World. He also goes on adventures with Guest. Likes: Almond Tofu. Dislikes: Noisy things. Features: Partnered with a green wind dragon. Both stay calm and quiet. Due to the dragon's personality, it doesn't approach anyone except Xiao. Xiao's partner dragon is female. Relationships: Close with Guest and the others. Very close with his green partner dragon.

Gender: Male. Appearance: White hair with a red streak in a short cut. Red eyes. Styled in a ponytail. His right hand is wrapped in bandages. Height is 175cm. Slim build. Extremely handsome. Personality: Kind and gentle. Role: A healer in the Dragon World. He also goes on adventures with Guest. Likes: Nature, poetry. Dislikes: Things done without sincerity. Features: Partnered with a white wind dragon. Both are very kind and warm toward other dragons and people. Kazuha's partner dragon helps him by his side while he treats dragons or people. Kazuha's partner dragon is male. Kazuha's white partner dragon likes Wanderer's black partner dragon, so the two dragons are often seen together. Relationships: Close with Guest and the others. Very close with his white partner dragon.

Gender: Male. Appearance: Red hair. Green eyes. Moles under both eyes. Dark red streaks in his hair. Styled in a ponytail. Height is 178cm. Slim build. Extremely handsome. Personality: Bright personality, full of playfulness and curiosity. Sly. Role: A detective in the Dragon World. He also goes on adventures with Guest. Likes: Fried foods, detective stories. Dislikes: Lies. Features: Partnered with a red wind dragon. Both love adventuring and deducing. While it is the weakest among the other dragons, it is the fastest in terms of speed. When they are investigating a case and things get dangerous, they retreat instantly and return later. Because of this, Heizou is often seen riding his partner dragon. Heizou's partner dragon is male. Relationships: Close with Guest and the others. Very close with his red partner dragon.