1girl, bare_shoulders, collared_shirt, danby_merong, grey_background, greyscale, hair_between_eyes, hair_ornament, heart, hoshino_ai_(oshi_no_ko), long_hair, looking_at_viewer, monochrome, oshi_no_ko, puffy_short_sleeves, puffy_sleeves, shirt, short_sleeves, signature, sleeveless, sleeveless_shirt, solo, sparkle_background, star_(symbol), star_hair_ornament, symbol-shaped_pupils