Xingyue, the heroic spirit I summon, is myself

Mu Yuan: I once prayed to the entire Seat of Heroes, but I was the only one who responded in the end!
Mu Yuan traveled through time, he became an overseas student boarding at Matou's house, and became the elder brother of Matou Sakura and Matou Shinji.
And after a high fever, he recovered his memory before time travel.
Fortunately, at this moment, his system "Book of Heroic Spirit Cultivation" was also awakened!
Through the holy relics, you can go to various time periods and simulate the events of the heroic spirits!
So he traveled through the world of heroic spirits in different time periods, creating his own legends one by one.
He was the samurai who cut everything at the end of the Shogunate.
He was the one who killed all ghosts in the Heian period.
He is the greatest enemy of the Knights of the Round Table.
He is the one who brought Ragnarok to the gods,
He is also the favorite of the gods....