Yeah first 20 chapters are mainly just introducing us to world. In my opinion it's really great how the world is built and how it take time and a slow paced but still very fast story like in a chapter he is just chatting with a friend but suddenly in next chapter he is fighting against whole world it's very unpredictable.
This novel is not about just telling a story but it's about explain everything and taking you into the world itself but the thing is it's not for everyone
It has a different taste and many people won't like it. It take patience to enjoy this one and yeah for those who just started reading novels and are new to novels i definitely won't recommend this
And bro if you don't like it after reading 25 or so chapters then i suggest
drop it ( i can recommend another if you tell me your taste)