Review Detail of NoNameJustFame in Keys to the Gate

so many plot holes... i'm not sure why this novel is rated so highly The premise is good but the execution is sloppy The MC knows everything he needs to know without any learning, he literally will decide to learn some technique he pulled out of nowhere and just roll with it, no questions asked. Also, nothing is really explained plotwise... he doesn't really have a purpose other than mild curiosity, but i cant even say that for sure since the MC has the personality of a cardboard box. He literally feels nothing and is never really surprised by anything or has strong feelings for anyone else.