Fragil is a woman with black hair and wears a fuzzy white hat.
At the Royal Knights Selection Exam, Fragil is placed on Team G with Langris Vaude and Sekke Bronzazza. As their first match begins, Fragil notices Sekke panicking and asks if he is okay and if he is strong like the Black Bulls. Smiling and winking at her, he tries to play it off. Team G wins easily.
During her second match, Fragil hides herself in a tower with her team's crystal. When Leopold Vermillion and Hamon Caseus burst through the door, her Miniature Garden of Illusory Snow forces them to sleep, but Leopold resists the enchantment. Surprised that he is still awake, Fragil barely dodges Leopold's Spiral Flame, which damages part of the crystal. Fragil defends her team's crystal but fails, and Leopold destroys it. However, Team G wins because Langris destroyed Team E's crystal first, much to Fragil's relief.
Afterwards, Langris challenges Asta, so Julius Novachrono has Teams B and G reassemble on the battlefield, which confuses Fragil. She asks Langris for clarification, but he silences her and tells her and Sekke that he alone will handle the fight. Asta later defeats Langris and destroys the crystal with Black Meteorite. At the same time, Team B's crystal shatters, ending the match in a draw. Zora Ideale criticizes Fragil for being scared and only watching the match.
Several days after the exam, Fragil is chosen to join the Royal Knights and assembles with the others in the Royal Capital. While waiting in line to change her robes, Fragil is concerned when Rill Boismortier keeps spacing out. After everyone has changed, Mereoleona introduces additional members and reveals the location of the Eye of the Midnight Sun's base.
After the squad travels to the Gravito Rock Zone, Mereoleona explains the situation and divides the squad into teams. Rill infiltrates the dungeon with Fragil, Puli Angel, and Ruben Chagar. As light shines out from the dungeon, Fragil and her team begin glowing themselves. They are all possessed by elf spirits and follow Lira after he crashes through the floor.
After Mereoleona challenges them by herself, the five elves attack with Angel Flapping, and Fragil follows it up by dulling Mereoleona's senses. After Rhya slashes Mereoleona, the other four rain down more feathers on her. However, Mereoleona survives and attacks Rhya.
When Mereoleona unleashes her strongest attack, the elves survive with minor injuries at the cost of most of their mana. Seeing that Mereoleona is also still alive, the elves combine their magic for one final attack to finish her off. However, Zora and Asta quadruple the power of the spell and reflect it back at the elves. The spell passes overhead and detonates behind the elves, and the Knights escape.
- Team G vs. Team H: Win
- Team E vs. Team G: Win
- Team B vs. Team G: Tie
- Mereoleona Vermillion vs. Five Elves: Interrupted
- Fragil's favorite things are lemon sherbet and sincere people.
- Fragil ranked 48th in the second popularity poll.
- Her name can be pronounced as frágil tormenta, which is Spanish for "fragile storm."