safebooruhttps://safebooru.org/index.php?page=atom&tags=1boy 1girl aged down bangs black hair black socks blue eyes bow (music) card (medium) character name character signature couch fingernails holding holding instrument idolmaster idolmaster side-m instrument kagura rei kagura rei's mother male child official art open mouth short sleeves shorts slippers smile socks teeth upper teeth only violin2024-06-03T16:59:11Zsafebooru