I'm so Weak

You were chosen by the gods to become a brave man. The gods give you an "entry-level magic book" and tell you that you can learn it in two years. But after two hundred years, you have barely learned half of the "entry-level magic". You were ashamed and asked the gods to give you more time, but you were slapped away... This is a story about killing minions with a big move, defeating a boss in seconds, and battling wits and courage with an indescribable thing...