1girl, ahoge, arknights, black_skirt, black_suit, black_thighhighs, blush, brown_cardigan, cardigan, closed_mouth, formal, jacket, jl_tan, looking_at_viewer, lying, mushroom, necktie, on_back, one_eye_closed, red_necktie, scene_(arknights), shirt, short_twintails, skirt, solo, suit, thighhighs, twintails, white_background, white_hair, white_jacket, white_shirt, yellow_eyes