Due to his tragic childhood, which left him an orphan, Kakucho is withdrawn when it comes to trusting others. The only one he unwaveringly trusts is Izana Kurokawa, his self-proclaimed "king" since childhood, due to their shared difficult experience of orphanhood, whom they both met and grew up as brothers. This makes Kakucho an obedient servant of his king. Kakucho is immensely devoted to Izana and really loves and respects him.