Undead King ~A Low-Ranking Adventurer, With the Power of Monsters, Becomes Unbeatable~ - Chapter 47

Bruh. This Red Man really had to guess the truth, huh? Come on, the MC is barely a newbie B Rank Monster, for sure there are people in this world that can kill B Rank Monsters, right? Is there no S rank? Is level 100 the level cap after all? But Chrome is already above level 50 and this is just the end of the 1st of who knows how many volumes (my guess is at least 4, Korean Novels and Manhwa are usually fairly long).
I want to believe than level 100 is far from the level cap of this world. Perhaps 255 would do it (classic 16 bit limit).
Given how Chrome can easily level up by killing 1 monster/human at a similar level, shouldn’t it be extremely easy for humans and monsters alike to level up? There is no grind at all, just killing someone at a similar level grants a level up, so shouldn’t it be easy to level up once per week just by killing 1 monster per week? Just like that after 1 year everyone that can succesfully kill a similar level monster/human would rise over 50 levels per year, by just killing 1 opponent at their own level per week?
I’m not saying that’s easy to do, monsters are on average stronger than humans at the same level. but killing monsters 10 levels below you shouldn’t be a problem, right? Killing one of them per day should still be enough to level up once per week, right?