I think their similarities are the dungeons and defeating monsters esque. Id say Closers and I Am the Sorcerer King seem kinda closer in comparison cause the characters don't know how to close the dungeons.
While in Solo Leveling, dungeons are ranked and can be easily closed. But the monarch conspiracy is the main plot.
lol i actually couldn't wait till i got a reply so i started reading anyway..im in chp 32...and ITS NOT AT ALL SIMILAR TO CLOSERS...except for the strong mc...but here tho he goes through reawakening he still has to work hard to be that strong..but in Closers..the mc was born from strong parents..so he doesnt really have to work that hard..and dungeons and defeating monsters part is also similar..but the main plot is completely different..
maybe its cuz i only read the description...but isnt this one very similar to Closers?
the anime?
idk how the rest of the story goes...but from what i read bout the plot it feels very similar..can someone tell me if its the same ior different..cuz i would like to read it..from ur opinion..TY<3