2boys, ass, back-to-back, back_tattoo, bara, blonde_hair, completely_nude, facial_hair, from_behind, glowing_tattoo, kyosuke, looking_away, male_focus, mike_zakarius, multiple_boys, muscular, muscular_male, muted_color, nude, reiner_braun, shingeki_no_kyojin, short_hair, sketch, stubble, tattoo