Tanjiro and Nezuko Kamado von LakapaxxD

Tanjiro Kamado and his sister Nezuko Kamado. Anime: Kimetsu no Yaiba (Demon Slayer, Guardianes de la Noche, Cazador de Demonios, Devil's Blade, KNY, DS, DB, 鬼滅の刃). Haori pattern, green and black squares, water breathing.