1boy, abs, alternate_muscle_size, bara, belly, body_markings, chest_hair, greyscale_with_colored_background, head_tilt, jockstrap, kekkai_sensen, light_blush, looking_at_viewer, male_focus, male_underwear, mature_male, multiple_views, muscular, muscular_male, navel, navel_hair, nipples, nore_(boosuke), pectorals, plump, short_hair, sideburns, spot_color, steven_a._starphase, stomach, thick_eyebrows, topless_male, underwear