Lucan's desire to become an Evil Magician stems from his understanding of the world he finds himself in. Back in his original world, Lucan played a game where the Evil Magician was the strongest character, a figure so powerful that not even the protagonist, Maris, could defeat him without the help of special artifacts and allies. This left a deep impression on Lucan, and he came to believe that becoming an Evil Magician was the surest path to ultimate power.
Lucan's situation is unique—he knows many secrets about the world, such as the locations of hidden dungeons, powerful monsters, and even some historical events. However, despite this knowledge, the world is still largely a mystery to him. There are many things he doesn't understand, and this uncertainty fuels his desire to gain more power. By becoming an Evil Magician, Lucan believes he can protect himself against whatever unknown dangers the world might hold.