2boys, asymmetrical_clothes, battle, blood, blood_splatter, broken, broken_sword, broken_weapon, comic, contemporary, demon_boy, demon_slayer_uniform, extra_ears, eye_focus, eyelashes, facing_away, fingernails, haori, holding, holding_sword, holding_weapon, japanese_clothes, katana, kimetsu_no_yaiba, kozenini, long_hair, long_sleeves, male_focus, monochrome, multiple_boys, out_of_frame, sharp_fingernails, surprised, sword, tomioka_giyuu, water, waves, weapon, wide-eyed, wide_sleeves