Reiwa Demon Chronicles

In the Reiwa era, beneath the neon splendor of Tokyo, ancient spirits quietly awaken. The thousand-year seals are crumbling, and shadow demons roam the city, while ordinary people remain oblivious. Only the Onmyoryo and warrior descendants who form the cultivators silently protect the peace of the human world. High school student Asano Saku, born with a pure eye that can see spirits, has long hidden his abilities, but is forced into the supernatural world by a series of disappearances. The young captain of the Arakawa Divine Guard, Tachibana Minato, bears the blood feud of his clan's annihilation, wielding his katana with ruthless resolve, and harbors deep resentment against the corrupt Onmyoryo. The two boys, initially at odds, become each other's most reliable bond through life-and-death battles against evil. Internal factional strife within the Onmyoryo, hostile forces attempting to unseal an ancient calamity god, and hidden ancient sects stir beneath the surface. The young team travels across Japan's spiritual nodes, tearing through the hypocrisy of the establishment to fight the chaos of the era. One uses his pure eye to seal spirits, the other cuts through the long night with his warrior's blade, protecting the mortal world with their youthful resolve. Japanese-style fantasy | Dual male leads with fiery camaraderie | Urban spirit mystery | Ensemble growth, no romance, high-octane leveling and monster fighting throughout. — Description from novelcodex.org