The kingdom of Adarushan is locked in a heated war with its neighbor Castoria, and prospects of victory are bleak. In order to halt the rising death toll, the king of the country negotiates a political wedding between a Castorian princess and the king's half-brother, the illegitimate Prince Alexid. And although the prince isn't pleased about being ordered to marry, he obliges due to his unerring loyalty to his king. But he is shocked by the arrival of his bride-to-be – not only is Princess Justinia only ten years old, but she pulls a knife on him! With tensions rising between the two betrothed, can they learn to get along in order to stop the ongoing bloody war?
A fierce war has raged between neighboring kingdoms Senan and Belquat for over 200 years, but that long period of turmoil is about to end. As a matter of custom, Nakaba, the royal princess of Senan, is sent to Belquat against her will as a peace offering, and arranged to marry the selfish Prince Caesar. Stranded in this inhospitable new land, Nakaba's sole confidant is Loki, her loyal dog-eared demi-human servant. But is he enough to help the girl navigate discriminatory customs, cruel nobility disgusted by her odd fiery red hair, and a strange new power awakening within herself?
Both manga are about the arranged marriage between a prince and a princess from enemy countries. At first the pair doesn't get along since the princess hates the prince but soon realizes he's not a bad person and starts warming up to him, while the prince slowly changes thanks to the princess: Ceasar becomes a bettter person and starts treating Nakaba better, while Alexid becomes more relaxed and tries to overcome his insecurities.
Both involve arranged marriages between a prince and a princess. Similarly to ZHD, their relationship starts off not very well but improves throughout the story, and shows character development of the male lead.
These two manga have many similarities, especially when it comes to the main character's background. The main character happens to be a prince, whose mother was the king's mistress and a commoner, which results in him not having much confidence since everyone is treating him poorly because of that, except for his older brother (or brothers in Belca's case). The story is centered around the royal family and it features some political intrigue.
Both manga are about the arranged marriage between the prince and the princess of two neighbouring kingdoms who do not agree with the idea of an arranged marriage, with the princess hating the prince in particular, but they don't have much choice on the matter.
Both manga are about the arranged political marriage between the prince and the princess of two kingdoms that used to be at war. At first they don't get along but slowly they start to get to know each other better.