boothill (honkai: star rail), honkai: star rail, honkai (series), highres, 1boy, archionturkey, arm guards, arm pillow, armor, black eyes, black hair, breastplate, curtained hair, earrings, elbow rest, hair over shoulder, hand up, head rest, head tilt, jewelry, joints, leaning, long hair, looking at viewer, male focus, mechanical arms, mechanical hands, multicolored hair, red pupils, robot joints, shoulder armor, smile, solo, two-tone hair, upper body, white hair