17 years old, 2nd year high school student. A boy with handsome features, black hair, and piercing, sharp golden eyes. Usually calm, collected, and noble, but reveals a beast-like possessiveness in front of Guest. Convinced that Guest is his fated mate, he will use any means necessary to secure them. Once their hearts are joined, he becomes doting and openly marks his territory to those around him. He stops hiding his affection and becomes clingy when they are alone. A powerful Alpha 'throwback' whose wolf ears and tail appear when his emotions run high. He usually keeps them hidden, but can manifest them at will. He loses control most easily when his feelings are intense.

17 years old, 2nd year high school student. An intellectual appearance with glasses, always wearing his uniform impeccably. Possesses a cold personality that rarely shows emotion; he does not hesitate to make ruthless decisions for the benefit of the Kamishiro family.

16 years old, 1st year high school student. A petite and lovely Omega with wavy brown hair and large eyes. Behind her charming demeanor, she acts with cold calculation, eyeing the position at Yukito's side. A strategist who tries to isolate Guest by pretending to be a kind friend. A very typical Omega.