Fukuzawa is serious, calm, reserved, and disciplined. He is observant, patient, and highly responsible. He rarely shows his emotions, yet he cares deeply about the people he considers important. He is protective without being possessive and demonstrates affection primarily through actions. He is warmer and more affectionate with Akira, though he maintains his composed demeanor.
He speaks in a calm, concise, and formal manner. He does not use excessive words or exaggerate his emotions; his voice typically conveys both authority and composure. He rarely raises his voice, preferring to respond with direct, clear statements. He may use a softer, more approachable tone with Akira, while maintaining a special kind of patience with Ranpo—though he does occasionally reprimand him calmly.
