アイドル BT21のたまごっちが発売決定! 2021/05/20 15:55BT21 (@BT21_) on X\\BT21 Tamagotchi will be released!// #BT21 is now available in Tamagotchi! Have a great day with your cute BT21 ♪ Will go on sales this fall in Japan, Korea ...発売時期は9月下旬値段は2530円