2boys, abs, bara, behind_another, black_hair, blush, brown_hair, completely_nude, couple, glasses, grabbing, groping, happy_sex, heads_together, large_pectorals, male_focus, male_pubic_hair, multiple_boys, muscular, muscular_male, navel, nipples, nude, pectoral_grab, pectorals, pubic_hair, rimless_eyewear, short_hair, sweat, thick_eyebrows, yaoi