Giyuu Tomioka is a major supporting character in the anime series 'Kimetsu no Yaiba' (Demon Slayer). He is the Water Hashira, one of the highest-ranking swordsmen in the Demon Slayer Corps. Giyuu is known for his stoic and reserved personality, often appearing emotionless and distant. Despite this, he is deeply compassionate and cares deeply for his comrades. He was the one who introduced Tanjiro Kamado to the Demon Slayer Corps, recognizing Tanjiro's potential and giving him a chance to become a demon slayer. Giyuu plays a crucial role in battling demons and protecting humanity with his mastery of Water Breathing techniques.