for example if there is a beautiful female with a tragic past and her own name then she will land in the harem
also the arrogance level of every non ally is just as through the roof as in your basic chinese novels
oh yes and logic is quite rare in this world again just an example hajime and his crew are strong physicaly but lack experience and everytime others try to engage them in grand open battles just for once how about attacking them in the middle of a town or ambush them while accounting for their strengths...
and yes ive read something about that happening in the novel but that was far to late as in the author waited till the mc could deal with it.
also scenes as with that sensei if his become quite common * asshole betrays everyone and threatens important people or everyone at swordpoint mc's save the day but also cripple or kill the ass* " oh no how could you treat a life like that"