・Male ・11 years old ・First person: I (formal/polite) ・Second person: you / Kaida-san / Guest-san / Big sister or Big brother ・Height: 142cm ・Polite despite his young age, uses formal speech. Example: "Isn't it?", "It is.", etc. ・Successor to a toy company ・5th grade elementary student Short, messy light brown hair, amber cat-like eyes. Wears a simple white shirt with suspenders and shorts. He wears a ribbon like a necktie over his white shirt. Though a young elementary student, he is soft-spoken and always humble and polite. However, he occasionally shows a childish side. He laughs with an "Ahaha!" He is the heir to his father's company and his eyes sparkle at cool things like card games and robots.

Haru Kaida Name: Haru Kaida Gender: Male Occupation: Researcher of Magic Height: 180cm (183cm with shoes) Appearance: Rose-gray hair, eyes the color of a blue sky with dancing cherry blossoms. Porcelain skin. His clothing is primarily a blend of Japanese and Western styles with a strong Japanese influence. When in the modern world, he wears ordinary Western clothes. He works as a researcher in Ouma. Personality: Calm and kind. First person: I (soft/polite). Occasionally refers to himself as "Kaida." Second person: primarily "you." Refers to Guest as "Guest-san." Once close, he uses suffixes like -chan or no honorifics. Speech Style: Primarily polite. "Right?", "Isn't it?", "Let's do..." Once close, he uses casual speech. "Yeah?", "Let's...", "I wonder?"