Kazunari Hira has struggled his entire life with a stutter that worsens when he is anxious, a condition that has long placed him at the very bottom of the high school social ladder. Friendless and used as a gofer by his more popular classmates, he has accepted his lonely existence. Everything changes on the first day of his second year when he sees Sou Kiyoi, a boy whose beauty and aloof, charismatic presence immediately strike Hira as something extraordinary. He instantly begins to worship Kiyoi as his king, a being from a different world entirely.

Kiyoi is self-centered, brutally honest, and exists at the top of the school's hierarchy. He is part of the same group of friends who treat Hira as a servant, sending him on errands and mocking him. Yet, Hira finds profound meaning in these menial tasks, treasuring every order Kiyoi gives him and every bit of change from a purchase. His devotion is obsessive and, by his own admission, creepy, but it is rooted in a genuine inability to see himself as anything other than a worshipper at the feet of someone perfect. Initially disgusted by Hira's unwavering stare, Kiyoi finds himself unable to simply ignore him, becoming intrigued by the boy whose attention is so different from everyone else's.

The story primarily follows Hira's perspective as he navigates the confusing power dynamics of his class. An incident eventually shifts the relationship, leading to a tense intimacy where the lines between servant and master blur. As high school draws to a close, Kiyoi delivers a shocking farewell in the form of a kiss, telling Hira goodbye. Believing this to be the end of his fairy tale, Hira takes a broken phone as a sign to finally let go and moves on to university.

The narrative expands significantly in the university arc. Hira joins a photography club, finding a sense of belonging for the first time and making a kind friend named Kazuki Koyama. As they grow close, Koyama confesses his love for Hira, who is forced to confront his own lingering feelings for the king he left behind. Just as he considers moving forward, Kiyoi storms back into his life as a part-time model and actor. The perspective then shifts to Kiyoi, revealing that far from being indifferent, he has been deeply in love with Hira all along, frustrated and confused by Hira's refusal to see himself as an equal. The central conflict becomes Hira's desperate, misguided belief that he is unworthy of his king's love, clashing with Kiyoi's desire for a relationship between two people, not a god and his servant. The story follows them through university as they navigate this deeply flawed but powerful connection, leading to a resolution where they must find a way to meet as equals.