Review Detail of GuzaSan in Fantasy Assassin in a modern world

Dropped after around 30 chapters. It's just like, everything about this is so generic, every single character just has a template personality. literally Sadistic fighter, Tough cop, Grumpy teenager, and cute little sister. He can't kill anyone if it's not for money cause then he won't be the ideal assassin his little sister wanted him to be which is just beyond me. It's so stupid and he's not even an assassin anymore as in he's not a pro, he has no 'customers' and it honestly feels like something that's purely meant to increase the word count. MC hardly bothers hiding his abilities, numerous people already know his identity and capabilities and even his gym trainer knows something is weird with him. The cultivation system is nonexistent, there is mana, inner energy, and spells. For some unknown reason, he feels that he should learn how to harness that inner energy although it's apparently less pure than the mana he already uses. TL: DR - Cringe lines, non-existent combat system. Wouldn't recommend it to anyone interested in anything beyond a children's show level of plot.