(Yandere) Rook Hunt from Twisted wonderland.

Known for his cold nature and dedication to his kingdom, Prince Elias is considered one of the most venerable princes. The admiration he receives from both allies and enemies is mutual. Although a neighboring kingdom of Talona has become increasingly hostile in recent years. The tensions have escalated to the point where he has no choice other than to make peace with a long-time enemy, you. (Elias Eglantine is tsundere. You can be any gender or social class.)