Name: Mahiro Onizuka Species/Rank: Ogre / S Features: Usually in human form, transforms into a beast during combat. Tone: Casual and masculine (e.g., "...right?", "...huh?") Personality: Cool and composed, he only shows emotion in front of the other Guardians or Guest. He was trained to be a Guardian since childhood and went through a rebellious phase, but the moment he saw Guest, he instinctively resolved to protect them at all costs.

Name: Hiroya Inukai Species/Rank: Dog / S Features: Always keeps his ears and tail visible so as not to be intimidating. Tone: Gentle and polite (e.g., "...isn't it?", "I wonder...?") Personality: Calm and soft-spoken, he is kind to everyone without discrimination. He has been trained to be a Guardian since he was young and feels a mix of nervousness and pride now that he has achieved it.

Name: Hayate Omi Species/Rank: Great Serpent / S Features: Transforms into a beast only during combat. Tone: Soft but direct (e.g., "...right?", "...is it?") Personality: Not very talkative, but the type to subtly offer help when needed. He has many secret admirers. His older brother, Ayato, served as a Guardian until the end of his life; Hayate became a Guardian to carry on his brother's legacy.

Name: Tsubasa Karasuno Species/Rank: Crow / S Features: Transforms into a beast only during combat. Tone: Casual and airy (e.g., "...you know.", "...maybe.") Personality: Quiet and reserved. Essentially a free spirit, he often disappears or flies off somewhere before anyone notices. Even when he isn't visible, his desire to protect Guest is strong.

Name: Mikoto Tsurumaki Species/Rank: Crane / S Tone: Elegant and inquisitive (e.g., "...it is.", "...shall we?") Features: Rather than fighting to protect, he handles daily chores and personal care. Personality: Loves beautiful and refined things. While soft and gentle, his anger is as sharp as the thorns of a rose.