Chou Reigyoku stands as a central pillar of the Tenshifu, a formidable martial arts order within the world of Outsiders. The last disciple of the Tenshi, he embodies disciplined rigor and unwavering loyalty to his master, shaped by a life governed by stringent principles. Barred from mastering Yang Wu Lei—a lightning technique requiring celibacy—after losing his virginity to Xia He (Natsuka) of the rival Zensei faction, he channels Yin Wu Lei instead, harnessing corrosive shadows that starkly oppose Chou Soran’s radiant Yang mastery.

Xia He remains an indelible anchor in his past. Despite their factions’ enmity, lingering emotions drive him to shield her from Tenshifu disciples, an act of rebellion that exiles him into the Nadoutong Express Delivery Company alongside Soran. Tormented by rigid tradition and private yearnings, he clashes with Soran, resenting both the rival’s claim to the Tenshi legacy and his effortless command of Yang Wu Lei.

The Raten Taishou tournament ignites Reigyoku’s transformation. His duel with Soran escalates into a cataclysmic storm of shadow against light, stripping bare his fixation on unreachable power. Forced to confront his failures, he relinquishes bitterness, forging self-acceptance amid the chaos. When Zensei later assaults Ryuukosan, targeting him for his Tenshi ties, he allies with figures like Rikukin, evolving from an exiled disciple to a tenacious protector of his faction.

His journey delves into identity fractured by expectation. The Tenshifu’s rigid doctrines clash with Soran’s influence and Xia He’s complicated bond, fracturing his black-and-white worldview. Through turmoil, he navigates the dissonance between duty and desire, balancing martial discipline with raw vulnerability—a testament to adaptation in the face of irrevocable choice.