Let's drop some spoilers for clarification:
The ribbon girl:
The hero:
The nun:
Magnus:
Magnus's love interest is
At the end of this arc, the hero
It was a long time that I read it, I may have slipped in some details, but I think this pretty much resumes it.
The ribbon girl:
She is doing this not of her choice, she is in the hero's party because of family issues, the nun promised to help her with it, she will help Magnus in the final fight and get her redemption...
Is mad, he is so blind by his madness that he will partner with the demon general to fight Magnus (he will lose)...
Similar to the hero, she will help him to fight Magnus
He will have a 2 round fight with the general, in the second round, all people (including the King) will see how twisted the hero and the nun are
the blond busty girl, the ribbon girl (until I read) isn't, she even goes back to her village...
will face humiliation, the King could not put him in jail, due to his status, but he will be sure to inform every people in the other kingdoms what the hero has done in his kingdom and he banished him (and the nun) too...
It was a long time that I read it, I may have slipped in some details, but I think this pretty much resumes it.