Sentenced to Be a Hero, Vol. 2 (Light Novel): The Prison Records of Penal Hero Unit 9004 (novel)

Xylo and company may have defeated Demon Lord Iblis and saved Mureed Fortress, but their punishment goes on. New enemies emerge—a demon lord with the ability to don a human disguise, and a band of assassins bent on killing Teoritta—plunging the city of Ioff into chaos and destruction. With the addition of a dragon knight and a mysterious artilleryman, penal hero unit 9004 finds itself sinking ever deeper into a vortex of combat and conspiracy!