A kid drops into a world that makes no sense and decides to trust it anyway. Endride commits to that optimism even when the plot gets weird, even when the world-building contradicts itself, even when you're pretty sure nobody involved fully agreed on what was happening. The real hook isn't solving the mystery of Endra, it's watching Shun refuse to get cynical about any of it, and somehow make that work as a survival strategy in a place designed to break that kind of hope.
Shun Asanaga, a cheerful fifteen-year-old from Tokyo, touches a strange crystal at his father's company and instantly finds himself transported to Endra, a hidden world beneath Earth's surface. Here, colossal gems hang in the sky and strange phenomena defy everything he knows about reality. He quickly encounters Emirio, a young prince who has just come of age and is consumed by rage against his tyrannical father, King Deruzain. Emirio's plans for vengeance crumble when the king's overwhelming power crushes his rebellion, landing the prince in chains. Rather than abandon him, Shun forms an unlikely partnership with this broken royal to challenge Deruzain's oppressive rule. What begins as a simple rescue mission evolves into something far larger. As Shun adjusts to Endra's bizarre landscape and deadly politics, he discovers that his arrival may not be coincidental. Together with Emirio and a growing band of allies, Shun must navigate a world of magic, betrayal, and ancient secrets while uncovering why he was chosen to cross between worlds in the first place.