Curse: Glory of Avalon

Due to an accident that was not within his destiny, Xu Tian had no choice but to live a second life in the magic war, and took the will of the world to compensate his younger brother Jia Ruyan, who had become a family member. Holding a holy sword, carrying a holy scabbard, and possessing almost unlimited spell power, can Jia Ruyan break the "curse of the strongest"? "I'm sorry, Satoru, the title of the strongest was taken away from me." (There are a lot of daily routines in the early stage, and there are some foreshadowing plots. I am a new author, so I hope everyone can correct me)