I’m the Only Programmer in a Different World~ The Knowledge of My Previous Life, Reincarnated and Revived, Is Demon King Class. I Was Abandoned by My Family, but I Feel Like the Law of the World Liked Me. Even if You Asked Me to Come Back, It Would Be Too

The moment I was hit as hard as I could, the knowledge from my previous life came back to me. In my previous life, I worked at a black company, but my current life is also terrible. I’ve been ab*sed and suddenly dumped. The reason why it was thrown away is because the mana capacity is small. But it’s about the same level as a commoner. It’s a tough road ahead, but I don’t worry about it because I have knowledge of adults in another world. I learned from the knowledge of my reincarnated child that there is magic in this world. Magic spells are unique, and even a single fireball spell, “Fireball, fly” or “Flame, swirl in a spherical shape and pierce the enemy”, can be anything. The key...