A human from the Kaguraku, Seijuurou was a renowned pilot, winning ten times consecutively in an annual Zoid tournament held within the town's coliseum. Like most competitors, Seijuurou fought for fame and glory. However, Seijuurou retired early after reasons he generally won't speak of. Though whatever caused him to retire, had a serious negative impact on his views as a pilot. Seijuurou retreated to live a simple wilderness life as a reclusive swordsman and Hermit. Despite this, many still remember his endeavors as a noble and skilled Zoid Pilot.
At one point in his life, Seijuurou became the teacher of a young pilot by the name of Ruuji Familon. At first, he had outright refused to teach the kid anything, deciding that he would no longer teach anyone. But after some time spent, he slowly began to agree. However, he warned that his training regimen was harsh and strict. One day missed was equivalent to three training days.
Seijuurou is a man of few words. Often seen silently judging those around him. Despite this tough, silent type of personality, he is very kind and caring towards his friends and will not hesitate for a moment to put his life on the line to save those around him. Though because of his quiet nature, Seijuurou can come off as cold at times, even harsh to those whom do not know him.