Adventurers Level up Alone

Leon accidentally traveled to a world where swords and magic existed. Bad news: Leon has been reduced to a low-level adventurer working as a sewer-cleaning rat. Good news: He has a monster hunting illustrated book. As long as you kill monsters, you can gain experience to improve your skill proficiency. Killing high-level monsters will also give you special trophies. ........ Obtain the map of the temple of the ancient gods [Remnant Map of Truth] from killing the wargs. Obtained from killing the hobgoblin [Card of Master of Destiny] In the end, Leon faced the evil god, looking at his countless nine-ring spells and the artifacts all over his body and fell into deep thought. [Hodgepodge worldview], [Fake dnd], [Kill monsters to add points], [Slow heat], [Adventure article] (I already have experience reading many Wanding works, so you can watch them with confidence)