1girl, arknights, arms_behind_back, deepcolor_(arknights), feet_out_of_frame, from_behind, greyscale, holding, holding_sketchbook, jacket, long_sleeves, looking_at_viewer, looking_back, miniskirt, monochrome, open_clothes, open_jacket, open_mouth, short_hair, sketchbook, skirt, solo, speech_bubble, standing, tentacles, thigh_strap, twitter_username, yom_(ymayma00ss)