I Analyze the Gods with My Spirit Son

Lin Yue, a theoretical physicist on earth, accidentally passed his soul into the body of Wayne Reiner, the second son of a declining nobleman in the northern part of the continent of Aitra. His original fighting spirit was mediocre, he had no magical talent, his family was in huge debt, and his territory was in danger. All the burdens of survival rest on the shoulders of the eldest brother Thain, who has superior fighting spirit talent. Lin Yue only had one more theoretical book from another world, "The Theory of the Origin of Spiritual Sons". In this world, fighting spirit is widespread, but magic is fragmented. Thousands of strange and secret magic schools are scattered across the continent. In the eyes of outsiders, the magic that Wayne performed was just another secret art from an unpopular ancient sect. Only the top leaders of the Holy See and the gods above could see through that it was a free spirit that had been banned for ten thousand years. Control variables, controlled experiments, and modeling deductions. While others rely on epiphanies and adventures, he relies on trial and error to record data and restore the lost ghost paths that only have numbers. Living and growing under the shadow of family crisis, aristocratic strife, and the church. A Zanpakutō condensed from his own soul and will, sprouted and took shape along with his cognition and mind. When the light of the spirit child tears apart the lies woven by the gods for thousands of years, mortals can also analyze the divine power and inquire into the origin of the world.