Chou Soran is the main protagonist who begins his journey as an ordinary college student living a peaceful life according to his grandfather's wishes. This ordinary exterior, however, hides a much deeper and more complex individual. He is described as a delicate and careful person, someone who does not immediately reveal his true nature or his burdens. When first thrust into the violent world of Outcasts, he appears scared, inexperienced, and easily overwhelmed, but this initial helplessness belies a sharp mind and a strong will to survive.

His primary motivation is a deeply personal one: to uncover the truth about his mysterious grandfather, Chou Shakurin. This quest for answers is the engine that drives his actions throughout the story, pushing him from a reactive, sheltered young man into an active participant in the conflicts surrounding him. In pursuit of this truth, he makes a calculated decision to enter and win the Raten Tournament, where he deliberately provokes and defeats his rival, Chou Reigyoku. Winning the tournament grants him the right to become the next Tenshi, or celestial priest, and thereby gain the position and influence needed to lead his clan and get closer to the secrets of his family.

His role in the story transforms significantly during the events of Zensei Chapter. After his victory, he is offered the position of Tenshi, but he becomes deeply suspicious of the ceremonial rules that come with it. His refusal to blindly accept these laws throws the established order into chaos and enrages the current Old Tenshi. At the same time, the villainous group known as Zensei makes its move, attacking the eight secret arts and his rival Chou Reigyoku. Instead of staying on the sidelines, Soran takes a proactive role, heading directly toward the battlefield to confront the threat and quell the escalating fights, seeking the answers that have always eluded him.

Key relationships define his path. The most significant is with Fuu Houhou, the mysterious and powerful girl who saves him from a zombie attack and becomes his protector and companion. She introduces him to the world of Outcasts and becomes his master, training him and fighting alongside him as they both search for their own answers. His rivalry with Chou Reigyoku is also central, as defeating him in the tournament is a pivotal step in Soran's plan. Furthermore, his entire quest is framed by the shadow of his late grandfather, whose final instructions and hidden past shape everything Soran does.

In terms of development, Soran undergoes immense growth. The frightened and seemingly useless college student from the beginning of the series evolves into a capable fighter and a cunning strategist. By the time of the Raten Tournament, he demonstrates not only increased combat skills, largely honed through Houhou's intense training, but also a sharp street sense and intelligence, even using clever, underhanded tactics to win his fights. This growth from a passive victim of circumstance to a determined individual who seizes control of his own destiny is a defining feature of his character.

Chou Soran possesses several notable abilities that set him apart. From childhood, he learned the Kinko curse and the Yougorai techniques. He is also able to wield the Kitai Genryu, which is one of the eight secret ancient techniques. His grandfather gave him the strict instruction to never use this particular technique in front of other people, implying its immense power and the danger or mystery associated with it. This combination of forbidden knowledge, disciplined training, and a natural cunning makes him a formidable Outcast, even as he continues to unravel the secrets of his own lineage.