2boys, abs, bara, batman_(series), black_bodysuit, black_hair, blue_bodysuit, blue_eyes, blush, bodysuit, covered_abs, dc_comics, dick_grayson, fingernails, grey_pants, hand_on_another's_hip, holding, holding_test_tube, jonathan_kent, large_pectorals, looking_at_another, male_focus, multiple_boys, muscular, muscular_male, navel, nightwing, nipples, pants, pectorals, short_hair, smile, superboy, superhero, superman_(series), suyohara, test_tube, yaoi