When I Realized It, I Had a Leftover Harem

I am an adventurer living in a world of swords and magic, and while carrying out a certain request, I ended up picking up a strange woman. That woman, calling herself Kanmagi Azusa, appeared before me completely naked, and despite my helping her, she was an outrageous woman who treated me like a servant. This self-centered Azusa was elevated to the status of a hero, and apparently embarked on a journey proclaiming ridiculous things like slaying the Demon King. But for some reason, she specifically requested that I join her party, and I ended up traveling surrounded by beautiful girls who wanted to accompany us on the Demon King subjugation alongside the hero. Wait? Is this a harem for me?