Trapped in a Dating Sim: The World of Otome Games is Tough for Mobs (Light Novel) Vol. 13

THE IDIOT BRIGADE HEADS INTO BATTLE!
The war with the empire has finally begun! As new and old humanity’s descendants fight for survival, Leon, Luxion, and the idiot brigade try to get past Arcadia’s defenses.
If they survive and reach the fortress, it’ll mean facing off with Finn! Even leaning on Luxion might not get Leon and his friends out unscathed…
The final volume!
Series Overview: Office worker Leon is reincarnated into a dating sim video game, where women reign supreme and only beautiful men have a seat at the table. But Leon has a secret weapon: he remembers everything from his past life, which includes a complete playthrough of the very game in which he is now trapped. Can Leon spark a revolution to change this new world order?