Damn I really want to know his real level

It should be either 150 or 169 (max level before transcending). Can't read Korean well, so take it with grain of salt

(⊙…⊙ )ヾ(☆▽☆)

This will be true if each lvl require the same amount of experience to level up e.g. fro lvl 10 to 11 = 1000 exp, from lvl 11 to 12 = 1000 exp..and so on. But i don't thing this is correct. Usually the higher the level, the more exp are required, e.g. from lvl 10 to 11 = 1000 exp, from lvl 11 to 12 = 2000 exp, from lvl 12 to 13 = 4000 exp and so on..

I am more or less understand your point. Hopefully we get to know Han Bin real level soon.

Well... I read the wiki and I can tell for sure his real level will only be shown in the final battle..... (near the ending).

Dude stuck with a broken system, so it's only when the system is taken (?) will his real level shown up.