I Tamed My Ex-Husband's Mad Dog, Vol. 3 -

Reinhardt decides to put her full trust in WIlhelm, the boy who's given her so much, and tell him the truth of lineage --only for him to reveal in turn that he already knows! However, despite her shock, Reinhardt doesn't have time to dwell on what other secrets Wilhelm might be hiding, as she readies herself for her first audience with the imperial family since her banishment!