Trapped in a Dating Sim: Otome Games Are Tough for Us, Too! (Light Novel) Vol. 2 (novel)

When Leon invites Marie to spend summer break with his family, everyone assumes the pair are as good as engaged. Marie, being little more than an aristocrat in name only, resigns herself and parts ways with Leon. But that smile and receding silhouette is hauntingly familiar, reminding Leon of his sister from his previous life. Can he really let Marie go?