Yui O’Brien was born a Liefe, a rare type of mage capable of wielding only non-elemental magic. In a world where magical society revolves around the four classical elements, her abilities are dismissed as difficult, impractical, and ultimately useless. Scorned by her noble father for this perceived failure, Yui and her mother are banished from their home. Yet Yui refuses to abandon her love for magic. After years of dedicated study, she earns admission to the prestigious Luster Magic Academy, hoping to learn from the kingdom’s finest practitioners. She must now survive among pompous nobles who view her as an eyesore while navigating a curriculum meant for elemental prodigies.

The setting is a fantasy kingdom where magical ability determines social standing. Luster Magic Academy serves as the primary backdrop, an institution where the fire-water-wind-earth dichotomy is everything. Yui’s early life is marked by her father’s emotional abuse, but circumstances change dramatically when her mother divorces him and returns to life as a commoner. Her mother soon remarries Layce Curtis, the kingdom’s prime minister, who becomes a devoted and overly protective stepfather. Yui also has twin older brothers who adore her, and she shares a deep connection with the second prince, a childhood friend who sneaks out of the castle to meet her. Due to his overwhelming elemental magic, others cannot touch him without being injured, but Yui is the sole exception, making her invaluable to the royal family.

Throughout her first semester, Yui is constantly ridiculed and undermined by privileged peers who believe a Liefe has no place at the academy. However, her supposedly useless magic proves powerful when combined with years of intense research and determination. She inadvertently scores high on exams, wins battle tournaments, and uses her abilities to heal both the magical trauma and the wounded heart of the second prince, who is deeply in love with her. By the end of the first volume, Yui receives a sudden romantic confession that she cannot bring herself to refuse, leaving her emotionally unprepared for what comes next.

The second volume shifts to summer break. Yui is required to attend a school training camp in the town of Bahal, famous for its sweets, offering her at least some consolation. The camp brings together influential figures from across the kingdom who have come to observe the students. When Yui demonstrates her skills as a Liefe in a magic battle, she attracts persistent recruitment pitches from powerful people who suddenly recognize her value. At the same time, she must navigate the presence of stuck-up nobles who resent her attendance and figure out how to respond to the confession she received. The summer brings secrets to light as everyone, even Yui herself, hides something, and she must dodge both professional solicitations and emotional confrontations while trying to eat as much as she wants in peace.