Koubun Ka is a supporting character from the Kou Empire, known primarily as the assistant of Princess Kougyoku Ren and a former Prime Minister of the empire. He was born and raised in the Kou Empire and grew up alongside Kougyoku from a young age, which fostered a deep sense of loyalty and familiarity between them. In his role as a high-ranking official, he was once appointed Prime Minister, but was later demoted to serve as an advisor to Alibaba Saluja after Alibaba assumed the position of Prime Minister. Koubun Ka's personality is marked by a strong desire for career advancement and recognition—he openly likes being promoted—yet he often finds himself frustrated by Kougyoku's willfulness and unpredictable behavior. Despite this, he remains devoted to her and carries out his duties with a sense of duty and pragmatism. His motivations are largely tied to maintaining stability within the Kou Empire and supporting the leaders he serves, even when his own status changes. Throughout the story, he appears as a reliable, level-headed administrator rather than a combatant, offering political counsel and handling bureaucratic matters. His key relationships include his long-standing bond with Kougyoku Ren, his professional collaboration with Alibaba Saluja, and his interactions with other members of the Kou imperial family. Development for Koubun Ka is subtle; he adapts to his reduced role without resentment, continuing to work behind the scenes. Notable abilities are not supernatural—his strength lies in his administrative competence, strategic thinking, and loyalty, making him an essential figure in the political machinery of the Kou Empire.