I didnt feel like I needed to type this up but after listening to 'Nightcore - Monsters AMV big anime tits' I felt testosterone flow through my body, my dick getting bigger, and chest hair growing so I know I had to type something controversial. Jokes aside, I do believe that Solo Leveling is filled to the brim with plot holes that people just ignore due to the cool art and ok protagonist.
For example: The 1st dungeon personality change was nonsensical. Bitch please, you don't go from wimp to badass in the frame of 1-2 chapters. Hell, even his looks changed for god knows what reason. He uses the same dagger he got in the beginning (the way too OP snake fang and the knight slayer dagger) the entire time, not changing once even though he could probably buy a much better dagger off of his store.
Those were just a couple of my issues with Solo Leveling. I enjoyed it but it shouldn't be in people's number 1 most enjoyed manga.