The Hero is a jackass to everyone and tanks his own reputation while the MC just keep trucking along solo, ultimately having to save the Hero party and defeat the Demon King's General on his own. At the victory banquet the Hero tries to set up the MC as being possessed by the Demon, turns out its one of the Royal Knights who is: MC kills him, the King basically sends out a worldwide missive saying the Hero and Priestess are enemies of their Kingdom because they sided with a Demon(against the MC who's being raised into being a Hero), stripped of their belongs and exiled from the Kingdom, with the Priestess being excommunicated from the church as well. Missha gets to watch MC be all lovey dovey with his GF(who should show up in Ch 3, she's the blonde girl hanging on his arm, and realizes she completely fucked up. His only party members are his GF(non combatant) and a Golem(destroyed in the fight at the banquet) at least until the end of the 1st arc.