Review Detail of DanteKSA in Shadow Slave

when i read a bad novel i just move on with my life but when i read a good novel but full of stupid stuff that make it unbearable to read then i get really sad and unfortunately this is my situation with this novel the writer is really good at making interesting story and moments full of emotions and great events but then the writer procced to stretch those good stuff to the atmost limit with filler that's gonna make you want to skip so bad, and that not what made me drop this novel. what made me do that is that the mc feels like a side character not only is he confused, ignorant, selfish, coward, etc. he only become better by following another character called nephis like a slave who honestly should be the mc, and whenever something happen that separate them from each other he goes back to his stupid and coward self but because i told myself maybe we will have a "character development" i should still stuck with the story but after 350 chs i literally watched the mc become an actual real slave of the character called nephis lol and i was just so angry at all the time i wasted on it, maybe after 600 chs or something he will find a backbone and find a way to break his slave contract with nephis but i really don't have the patient to wait for that anymore