character: kaigaku, A centered full-body portrait of Kaigaku from Kimetsu no Yaiba in anime illustration style, standing in a neutral stance with his head turned slightly to his right three-quarter view. He has short black hair, thick and sharply defined eyebrows undivided at the tips, and clear emerald-green eyes with a focused, serious expression. He wears the Demon Slayer Corps uniform, featuring a tight-fitting high-collared jacket with the Demon Slayer crest on the chest, and a cobalt-blue haori with numerous small white triangular patterns draped over the shoulders, resembling a complementary contrast to Agatsuma Zenitsu’s design. Around his neck, at the top edge of his uniform collar, a narrow blue cord is wrapped tightly like a choker, its left-centered gold magatama pendant pierced and threaded through the cord. A wooden-brown Nichirin sword hilt with yellow diamond-pattern accents is sheathed on his back, positioned diagonally from the right shoulder. The clean minimalist background is softly lit by ambient studio light, pale neutral tones, subtle depth of field, emphasizing sharp linework and crisp details.