Munesada Yoshimine, later known as the monk Henjō, features as a historical poet within the series. He shares a childhood bond with Yoshiko, who becomes Ono no Komachi, forging a sworn sibling relationship. This bond develops romantic tension when Munesada learns of Yoshiko's ambition to serve as an imperial attendant. He responds by proposing they elope to prevent her court service.

Yoshiko challenges Munesada to prove his commitment, demanding he meet her nightly for one hundred consecutive nights. He endures and completes this arduous task despite harsh conditions. On the hundredth night, a severe storm threatens him during his journey. Surviving and reaching Yoshiko, he hears her reaffirm her unwavering dedication to her imperial aspirations, rejecting his elopement proposal. This rejection devastates Munesada, compelling him to abandon his romantic pursuit.

Inspired by this anguish, Munesada composes a poem expressing his pain and resignation. The poem metaphorically implores heavenly winds to "close the gates" of the clouds, seeking to halt the messengers facilitating Yoshiko's departure to court. Following this pivotal rejection, Munesada renounces his secular life, takes Buddhist vows, and adopts the name Henjō. His story unfolds within the rigid social structures of the Heian period.

His later recognition among the Six Poetic Immortals (Rokkasen) and the Thirty-Six Poetic Immortals (Sanjūrokkasen) marks his literary significance.