Summoned by His Sister: National Fate Survival

Lin Chen transmigrates into the world of Armor Heroes. Through his own determination, he has just become the summoner of the Emperor Armor—the most powerful warrior form—when he hears a desperate call from his biological sister, Lin Chuxue, from Blue Star. During her nation's Guardian Spirit Awakening Ceremony, Lin Chuxue unexpectedly summons her brother as her personal guardian spirit, binding his fate to hers once more. On that very day, the National Fate Game descends upon every country, randomly selecting two participants to enter a monstrous realm teeming with Xenobeasts, Nether Demons, Protozoa, and other terrifying creatures. The stakes are dire: a contestant's death deducts from their nation's luck and triggers harsh penalties, while any resources they obtain are multiplied and returned to their homeland. While other participants struggle just to stay alive, Lin Chuxue—guided by her brother's insider knowledge—quickly becomes a fully-fledged Armor Hero, confidently chasing down and cutting through horrors that would make anyone else flee.