"Key Princess Story: Eternal Alice Rondo" is a manga series that blends fantasy, adventure, and elements of the Alice in Wonderland mythos. The narrative centers around Aruto Aizawa, a high school student who becomes entangled in a mysterious game involving the search for the "Eternal Alice," a figure said to grant any wish to the one who finds her. This quest is tied to a magical book known as the "Alice Compendium," which transports participants into a surreal, dreamlike world inspired by Lewis Carroll's works.

The story begins when Aruto encounters a girl named Arisu Arisugawa, who claims to be a "Key Princess" and is determined to find the Eternal Alice. Arisu is one of several Key Princesses, each possessing a unique key that grants them access to the Alice Compendium's world. These princesses are pitted against each other in a competition to locate the Eternal Alice, with the stakes being the fulfillment of their deepest desires. Aruto, initially a bystander, becomes Arisu's ally and navigator in this strange realm, aiding her in battles against rival princesses and the enigmatic "Black Rabbit," a shadowy figure who manipulates events from behind the scenes.

As the story progresses, the narrative delves into the backgrounds of the Key Princesses, revealing their motivations and personal struggles. Each princess embodies a different aspect of the Alice in Wonderland theme, with their designs and abilities reflecting characters or elements from Carroll's stories. The battles between the princesses are not merely physical but also psychological, as they confront their own fears, regrets, and desires. The Alice Compendium's world is filled with surreal landscapes, riddles, and challenges that test the characters' resolve and creativity.

The central conflict revolves around the true nature of the Eternal Alice and the consequences of obtaining her power. The story explores themes of ambition, identity, and the cost of wishes, as the characters grapple with the moral and emotional implications of their quest. The narrative maintains a balance between action-packed sequences and introspective moments, creating a layered and engaging plot.

Key characters include Aruto, whose grounded perspective contrasts with the fantastical elements of the story; Arisu, whose determination and vulnerability drive much of the plot; and the rival princesses, each with distinct personalities and motivations. The Black Rabbit serves as a recurring antagonist, adding an element of mystery and danger to the proceedings.

"Key Princess Story: Eternal Alice Rondo" combines a rich, imaginative setting with a character-driven narrative, offering a fresh take on the Alice in Wonderland concept while exploring universal themes of human desire and self-discovery.