Watanabe no Tsuna

Оригінальне ім’я: 渡辺綱

Tsuna appears by Raikou's side within the beginning of the anime, and continues to be by her side. Tsuna vows his life to protect Raikou no matter what circumstances, even when he is blinded in his right eye. Tsuna generally wields his long sword when in battle, especially when protecting Raikou.