I Borrowed My Brain from a Wizard

In this wizarding world that attaches great importance to the principle of equivalent exchange, the time traveler Roy is completely destitute. He has neither outstanding talents nor parents with strong backgrounds. He can only help him with his silent and dedicated "seniors". ... "The brainwaves of the third-level wizard apprentice are 90% damaged and can receive 1.4 Spiritual power blessings, which is not bad." "The brainwaves of the first-level wizard apprentice are 99.7% Damaged and cannot receive spiritual blessings. But there is a memory fragment? I hope it is about witchcraft and not the round thighs of an old witch." ... Many years later, Roy, the youngest true spirit wizard in history, was interviewed: "Why do I practice so fast?" "First, because I stand on the shoulders of giants. The ancestors of the wizarding world have already opened the way." "The second reason is because I don't spend time on trivial things like falling in love, and I focus on pursuing the truth in the world." "I was able to take this small step by forgetting all the sleep and food."