Trapped in a Dating Sim: The World of Otome Games is Tough for Mobs (Manga) Vol. 7

All on his own, Leon rushes the enemy's flagship and retrieves Angie and Gertrude! But before they know it, they're surrounded by the enemy and unable to escape from the principality's mightiest warrior, the Black Knight Vandel! And what developments are in store between Leon and Olivia...if Leon even lives to see her again?! Would a background character's deletion even be missed, or can Leon soar to even greater heights?!