The male protagonist of Hand Shakers. Tazuna is a friendly and benevolent high-school student that is an expert at mechanics and spends his time doing repairs for people who asks his help. His life is changed forever when he meets Koyori Akutagawa, a comatose girl who reminds Tazuna of his dead sister Musubu. Upon awakening Koyori, Tazuna becomes a Hand Shaker and Koyori's partner. Together, Tazuna and Koyori must fight other Hand Shakers and earn the right to meet God, who can grant them any wish they want.