2boys, black_eyes, black_hair, blush, collarbone, cowboy_shot, greyscale, half-closed_eyes, head_on_another's_shoulder, holding_hands, male_focus, medium_hair, monochrome, multiple_boys, muscular, muscular_male, pectorals, scar, scar_on_cheek, scar_on_face, smile, spiked_hair, yaoi