I Can't Proceed Unless I Defeat the Weaklings!

The main character, El, is one of the “Divine Heroes” chosen by the kingdom’s oracles. He is the boy known as the strongest hero on the journey to subjugate the Demon King alone. He doesn't care what kind of formidable foe he's up against, so he thinks he’ll live up to humanity’s expectations and defeat the Demon King immediately, but... Standing in his way, one by one, of all things... is a group of cute, weak enchantresses who can't even fight properly. A number of weak enemies that would normally be no match for him... Will he exterminate them without hesitation? Or will he show mercy and let them go? Or... will he succumb to temptation and intentionally lose...?