Osananajimi de Akuma na Kishi wa, Watashi no koto ga Daikirai

Suria overheard her childhood friend Reiss express strong dislike for a particular woman, which shattered her feelings for him. In a moment of emotional pain, she struck Reiss and declared she hated him before fleeing. Years later, Suria has grown into a valued "Spirit User" and is given a significant national mission. Reiss, now known as the cold-hearted "Demon Knight," is assigned as her escort. Their forced journey together resurfaces old wounds, and it appears Reiss is hiding something. The two must find a way to reconcile their past and move forward.