The Ivy Labyrinth: Volume 1 - The Ivy Labyrinth, #1

Kristy Fitzpatrick just can't catch a break. As a mortal in a magical world, she often feels disconnected from the rest of her mystical, more exciting classmates. The only thing that she has to compete with in the classroom is her mind. But even for a magical being like her impulsive naiad best friend, Brianna, life is far from stable. Centuries ago, when a fully formed labyrinth sprang from the ocean, the magic emanating from its ivy walls caused all kinds of devastating magical consequences that affect the planet every year from magical instability in beings all over the world to chaotic natural disasters. Every year, four high school students are chosen to enter the labyrinth and try to break its hold on the world by solving a series of complex riddles and challenges.
Most never come out. But when Kristy's school is selected as the home of the next four students, despite her lack of choice in the matter, she sees an opportunity to do something that no other student has managed to do so far: survive the labyrinth. In Volume 1 of this Hunger Games-meets-Maze Runner high fantasy story from serial fiction platforms, Kristy is about to learn whether her mind and body are up to the task.
Because somehow, as she tests her own limitations, the Labyrinth is learning how to best her and her companions. There is no telling what kind of obstacles could come next.