1girl, 1other, collarbone, d.y.x., expressionless, finger_in_another's_mouth, from_side, greyscale, hair_behind_ear, half-closed_eyes, hands_up, idolmaster, idolmaster_shiny_colors, index_finger_raised, looking_at_another, looking_up, missing_tooth, monochrome, nail_polish, open_mouth, out_of_frame, profile, sailor_collar, saliva, serizawa_asahi, short_hair, simple_background, solo_focus