The Princess of Convenient Plot Devices, Vol. 3 (light novel)

After coming face-to-face with her most haunting memories and staining her bodyguard Klifford's uniform with tears and snot, Princess Octavia barely has time to collect herself before she's dragged into an anti-royalist plot! Even worse, her brother's lover Sil, who she accompanied to the ball, has gone missing. She'll have to trust her masked potential (fake) boyfriend Rust-a notorious opponent of the crown-to guide them to where Sil is, but what will they find when they reach him?