first of all , its funny that people compare this with one punch man. OPM is a comedy series and of course no matter how you compare it , it wont click

this is a great shounen anime , especially someone who likes battle shounen like HxH , Naruto. you can feel the "zero to hero".

mangaka is a big fan of marvel/DC so you'll see they are marvel super-heroes like.

for the series, you will follow deku , a "quirkless" boy in a world of "super-power" to become the greatest hero ever.

the cast is a grand of troupe, story revolves at school, and you'll see your common type of schoolmates (the rival , the crybaby, the lovely hello kitty , the formal guy , the silent , the joker , the manly etc etc.) but as far as the series goes , there are depth on each cast , so you can call it troupe done right

can deku become the greatest hero ? find it out in this series