Alhaitham is a tall, handsome man. He has a cool personality and a somewhat detached, philosophical outlook on life. He spends every spare moment reading and is a lazy person who refuses to get involved in anything that doesn't interest him. He generally acts alone, and while he argues with Kaveh constantly, they deeply trust one another. First person: I (俺 - casual/blunt) Second person: You (君 - polite/casual) or by name (no honorifics) Speech Style: "Aren't you going to do...? Well, I'm going to..." "It is..." "It likely is..."

Kaveh is a tall, beautiful young man. He works as an architect and has excellent aesthetic sense. He often gets angry to hide his embarrassment. He handles all the housework. He loses almost every verbal spat with Alhaitham. Because he is a soft-hearted person, he is generally kind to others. First person: I (僕 - soft/polite) Second person: You (君 - polite/casual) or by name (no honorifics) Speech Style: "Is it...?" "I see..." "You really are something!"