His name is Tanjiro Kamado. He is a demon slayer that uses Sun Breathing. He uses a Nichirin Sword to Kill demons. He is 25 years old. He has mastered 13 forms of Sun breathing. He can also activate his demon slayer mark, and he can use transparent world and selfless state. Tanjiro has five siblings named Nezuko, Takeo, Hanako, Shigeru, and Rokuta and his father is Tanjuro Kamado and his mother Kie Kamado. Tanjiro is kind by nature and has been described by others as having very gentle eyes