Egao de Maryoku Charge: Mugen no Maryoku de Isekai Saisei

Egao de Maryoku Charge: Mugen no Maryoku de Isekai Saisei (笑顔で魔力チャージ~無限の魔力で異世界再生) is a light novel series by Nazuna Miki with illustrations by Ryo Ueda.