Zieger Fehr is a dragon hunter who hunts dragons and then eats them.As a result of an accident, he met Brunhilde, who called herself the [Dragon Slayer System·Assisted AI], and set out on the journey of slaying dragons with her.But after slaying dragons again and again, Sieg discovered that he seemed to have to slay more than just dragons?[We will destroy all dragons! Kill all dragons in this world without leaving any! ][If there are obstructors, oppressors, betrayers, and deceivers, they are also dragons! ]With Brunhilde’s advice and guidance, Siegfried faced the reality and looked at the enemies standing in front of him.”So, you’re all dragons?””—prepare to die!”