[Gerard07]

I found some illustrations from volume 12 of the novel;

Spoiler:

According to the spoilers

Spoiler:

Because of Erika, a hidden event started in the otome game, which takes place in a war for total annihilation between the old humans vs. the new humans.
The empire has a trap item called Arcadia which is the reason why the ancient humans were defeated in the past and and Leon doesn't have much of a chance to beat him.
Leon decided to leave the kingdom and gather the weapons of ancient humanity to increase his chances of victory as much as possible.
However, León knows that his probability of victory is only 12%. But if he is defeated then the inhabitants of Holfaul and Alzer will be annihilated, and if he wins he must annihilate the entire population of the Empire, so no matter who wins there will be genocide.
Angie and the others try to stop him, but are unsuccessful.

Things were like that in the WN?.