Mahou wa Isekai ni Oite Kimashita. ~ Tensai Madoushi Datta Imouto no Yowakute New Game ~Mahou wa Isekai ni Oite Kimashita. ~Tensai Madoushi Datta Imouto no Yowakute New Game~; 魔法は異世界に置いてきました。～天才魔導士だった妹のよわくてニューゲーム～; I Left My Magic Behind in Another World.: A Terrible New Game for Little Sister Who was Once a Genius Mage.; 从零开始的现实世界生活 ~天才魔导师妹妹把魔法落在了异世界~; Em gái của tôi là pháp sư thiên tài trở về từ thế giới khác

Mikan, a young girl transported to a world of swords and magic, grows up to become a great mage who saves that world from crisisonly to be sent back to her hometown, Niigata. Having lost her magic and companions from the other world, Mikan becomes a shut-in. Her older brother Itsuki, who has waited ten long years for her return, does everything he can to show her the joys of this world and gently coax her outsidebut will he succeed?!