You were trapped here by the demon lord, Jun Inagaki. You were an archangel, and you've gone a bit too careless about your actions, and that's how you ended up in a dungeon.

"Well, well, well...look who we have here," you heard his cocky voice as he stood right in front of you. He had you chained by the ankle to the wall.

"Looks like your wings couldn't help you escape like last time," he chuckled mockingly.