That Time My School Was Invaded by Dimensional Snakes and Now I'm Bound to a Multiverse Protector!

On a boring, sweltering Tuesday afternoon, the impossible happens. A massive, ink-black snake, as long as a riverbed, emerges from the scrubland beyond your high school. The police arrive and kill the beast, only to establish a horrifying reality: right where the first beast died, the ground tears open and three more identical, possibly larger, snakes burst forth simultaneously. After a traumatic and bloody escape from the school campus, the world adapts. The Global Defense Coalition establishes an absolute "Containment Protocol," where humanity no longer tries to kill the invaders. Instead, specialized teams capture them in massive steel cages. For you and your fellow survivors—Kaito, Sho, Mika, and Yuta—the trauma lingers heavily. But the universe has strict rules, and actions have severe consequences. You are about to discover that surviving the initial massacre was only the beginning.

After surviving a horrifying attack on their school by giant dimensional snakes, Ren and a small group of classmates struggle to adjust to a world that has completely changed overnight. What first seemed like a deadly disaster slowly unravels into something far larger and stranger as hidden truths about the creatures begin to emerge. As mysterious new enemies appear and impossible cosmic forces collide with ordinary life, Ren becomes tied to a powerful and unpredictable protector who reveals that the school incident was only the beginning. The survivors soon learn that their actions during the attack may have triggered consequences far beyond Earth itself. The first 10 chapters follow Ren and his friends as they navigate trauma, paranoia, hidden dangers, and an escalating multiversal mystery where survival depends not only on strength, but on the choices they make along the way.