This is a fanfiction based on the animated series Iron Beetle.
Qingqing finds a great demon king, but she doesn't know it. The next day, she finds a sickly, clingy boy, but she doesn't know that either. She always thinks the kindly uncle who treats her so well is just an ordinary fisherman, but he's actually the great demon king of the previous generation. Qingqing's life is full of happiness.
Theme: Turn from evil and do good
The big devil is actually a little shota, so cute in contrast. Collected