Typically, characters in 'level up light novels' level up through combat. They defeat enemies and gain experience points which then contribute to their leveling up. For example, in 'Sword Art Online', players kill monsters in the virtual world to get stronger.
No. 'Light novel' is a type of book, not something that can be eaten in a literal sense. And the concept of 'leveling up' usually refers to progress in a game or self - improvement in skills, which has no relation to physically consuming a book.
A common element is the progression of the protagonist's power. They start from a relatively weak state and gradually become stronger through leveling up. Another element is often the existence of a system or set of rules for leveling, like gaining experience points from battles or completing quests. There's also usually some sort of status display that shows the character's current level, stats, and abilities.
One of the main themes is power growth. The protagonist goes from being a weak hunter to an extremely powerful one. Another theme is about facing challenges. He constantly has to deal with various dangerous dungeons and strong enemies.
The reason could be that the player is missing a key item or has a flaw in their strategy. It might also be that the game is designed to be extremely difficult to level up, adding more tension to the story.
There could be several reasons. It could be that the player is missing a key element or has a curse. Or, the leveling system could be broken or have hidden requirements not yet discovered by the player.
I'm not sure specifically which light novel this refers to as there could be many with fast - paced leveling - up themes. It might be about a protagonist who has an extraordinary ability to gain levels at a rapid rate, perhaps through unique skills, magic, or a special system within the story's world.
Since we only have the description 'the world's fastest level up light novel', there are many light novel authors out there who could potentially write such a story. It could be a relatively unknown author trying to make a name for themselves in the genre, or it could be an established author who decided to explore this type of fast - paced leveling concept. There are so many light novels being published these days that it's really hard to say who the author might be without further details.