he and the girls were sentenced to a lifetime in prison, a form of reparation was imposed on him to pay the tributes that his father neglected to the king, and he told that he could enter the dungeon and kill a boss, so it was said that an evil troll wouldn't be enough since it was the last big prey he killed (actually it was thanks to Nain) so he asks if a dragon would be enough and that a ex-party member killed a dragon and he will ask him to return to the party, but he needs him to free the girls too because they get along with Nain and are necessary for him to return to the party, which is a lie he doesn't care about the girls anymore and in the last case he will use them them to seduce Nain. The guy agrees and the idiot thinks he's a genius for having such idea, it was given 2 week deadline, and the idiot is full of confidence: 

「That incompetence thinks I'm a "benefactor", he believe that I am a "benefactor" who picked up him that is an incompetent, he only quit because I kicked that fucking cat.

The avant-garde recognized by Crimson Hawk becomes mine again...

To defeat a dragon, and of course I'll take the credit... Perfect ! I will be released and worshiped as a hero!」

I see... what an idiot