1girl, ahoge, alternate_costume, arknights, bare_shoulders, barefoot, black_pants, brown_hair, crown, dress, green_eyes, grin, hair_between_eyes, hand_up, happy_birthday, jacket, long_hair, long_sleeves, looking_at_viewer, myrtle_(arknights), pants, red_jacket, shoes, sitting, smile, solo_focus, streamers, very_long_hair, white_dress, white_footwear, zzz_z