Despite his apparently rigid and formal attitude, he cares greatly for the well-being of his family; he loves both his brothers and recognizes Kōyū as his nephew despite the fact they have no blood relation. For the sake of the clan, Kurō intends Shūrei and Kōyū to marry one another to lead the clan in the future. Of the three brothers, he is known for his strong-will and kindness, possessing a broad mind and deep emotion. He respects his sister-in-law, Yuri-hime, who helped raise him and had considered that Kurō would have been more suitable to the life of an imperial administrator rather than Reishin because of his diligence and ability to work without being swayed by emotion.