Daughter of the Emperor, Vol. 4 by Rino (Manhwaga) (Paperback)

"Princess Ria is on a mission! The objective: find out why Asisi is avoiding her. The beautiful knight distances himself every time she's in his sight, but Ria is nothing if not tenacious--and she's enlisted Caitel and Perdel for recon. Operation win over Asisi...commence!"--Publisher.