"Reikenzan: Eichi e no Shikaku" is a fantasy anime series set in a world where humans and supernatural beings coexist. The story centers on Oubu, a young boy with a mysterious past, who is discovered by a group of cultivators from the Reikenzan sect, a prestigious organization dedicated to training individuals in the art of spiritual cultivation. Oubu is brought to the sect to participate in a rigorous selection process to become a disciple, competing against other candidates to prove his worth and unlock his latent potential.

The narrative unfolds as Oubu navigates the challenges of the selection trials, which test not only physical and magical abilities but also character and resolve. Alongside him are other aspiring disciples, including the sharp-witted and resourceful Youko, the stoic and disciplined Ryuushin, and the enigmatic and powerful Shoukan. Each character brings unique strengths and motivations, contributing to the dynamic interactions within the group.

As the trials progress, Oubu begins to uncover fragments of his forgotten past, hinting at a deeper connection to the Reikenzan sect and its history. The series explores themes of self-discovery, camaraderie, and the pursuit of power, as Oubu and his peers face external threats and internal conflicts. The Reikenzan sect itself is revealed to harbor secrets, with factions vying for control and hidden agendas influencing the disciples' journey.

The plot intertwines action, humor, and moments of introspection, balancing the high-stakes competition with character development. Oubu's growth as a cultivator and his relationships with the other disciples form the emotional core of the story, while the overarching mystery of his origins and the sect's true purpose drive the narrative forward. The series concludes with a mix of resolution and open-ended questions, leaving room for further exploration of its richly constructed world.