異世界で姉に名前を奪われました (Series) favorite_border

[DeepL Translation - needs review] Introduction to Volume 1: College student Ichika interacts with a boy named Cecil from another world through a hand-mirror she found in a storage room. One day, her older sister, Hanako, suddenly disappears, and the hand mirror disappears at the same time. A year later, Ichika was sent to another world as soon as she got her hands on the hand mirror that she found by chance. There she finds Cecile, who has grown up to be older than her, and Hanako, who has ...