Like any Evenkuruga, Genjimaru is loyal to the person he is aligned with. But unlike Touka, he is willing to make his own choices and not let his duties and honor cloud over him, even if it meant rescinding his pact with Dii.
During Genjimaru's younger days in service to Kunnekamun, the country's previous sovereign made a pact with Dii, who was Witsuarunemitea, in exchange for power to subdue the other countries that had weaken them. This power was in the form of the Avu-Kamuu. Genjimaru was one of many witnesses to this event.
Kuuya - Genjimaru was ever loyal to Kuuya, even as she declared war among all nations to unify the country. Even then, Genjimaru thought of Kuuya first and foremost and would do anything to save her whether it be aligning with Tuskuru or attacking Dii head on, resulting in his death which scarred Kuuya for life.
Hakuoro - Genjimaru found Hakuoro to be friendly and trustworthy, even as he knew that he was Witsuarunemitea's good half. In his final moments, Genjimaru would leave everything, including Kuuya, to Hakuoro.
Dii - It is suggested that Genjimaru enjoyed serving Dii as he recalled that they were such nostalgic and happy days of his life. He was also aware that Dii was Witsuarunemitea and was not afraid to turn his blade against him.
Sakuya - His granddaughter.