okami is an okay game,the cellshaded graphics are awesome and some of the music is quite good too,personaly if there is a problem with it,it's the same problem that plague zelda in general too (helper character that won't shut up,puzzle so obvious a monkey could do them...)
what himuro meant is that (this is not really a big spoiler but you might never know)
spoiler (click to show/hide)
there are actualy 3 big storylines in the game,imagine that after link defeats ganon instead of the game ending,the game goes "and then everything went peacefull for a while" and then pull off another villains from his ass,that's what okami does,i personaly like the idea because as far as i know,it makes okami the only game with multiple story arcs,sure some game have character growing up in the future and yadda yadda but they are still fighting the same big bad for the same reason
and yes,one of the boss pops up twice (there is actual a plot related reason for this) and then you fight him again in a boss rush at the end and it's still the same boss without any change do it to them but seriously it's not so bad,it's the only boss that get repeated outside of the boss rush and personaly you know what? between the original mario galaxy and mario galaxy 2 with their medals,time trials and boss rushes,i have fought that stupid plant boss at the beginning of the game at least 6 times,but you don't see people having a problem with that