2boys, bed, bed_frame, black_hair, blue_theme, blush, closed_eyes, curtains, day, expressionless, facing_away, from_behind, gradient, half-closed_eyes, hand_on_another's_cheek, hand_on_another's_face, happy, indoors, leaf, male_focus, monochrome, multiple_boys, nose_blush, pillow, sleeping, smile, speech_bubble, tree, under_covers, window, yaoi