My Soul Travels Through the Fantasy World, I Use the Electromagnetic Gun to Prove the Truth

The soul accidentally traveled through the fantasy world to an unlucky guy who was struck by lightning. A blessing in disguise, he embarked on the path of genius. Use the knowledge from the past life to make weapons, use the knowledge from the past life to improve the skills, and shine in this other world. Friendship! Love! Who can understand right from wrong? Limited life, infinite struggle! Let me use the electromagnetic gun to prove the truth!