2boys, abs, afterglow, aquiline_nose, bara, bed, bertolt_hoover, blush, closed_mouth, collared_shirt, couple, greyscale, holding_hands, large_pectorals, looking_at_another, lying, male_focus, monochrome, multiple_boys, muscular, muscular_male, navel, ni_yuu, nipples, on_back, on_bed, on_side, partially_unbuttoned, pectorals, pillow, reiner_braun, shingeki_no_kyojin, shirt, smile, yaoi