21 books • 2 series
Book #3: The Unwanted Undead Adventurer (Manga): Volume 3
Book #4: The Unwanted Undead Adventurer (Manga): Volume 4
Book #7: The Unwanted Undead Adventurer (Manga): Volume 7
Book #3: The Unwanted Undead Adventurer (Light Novel): Volume 3
Book #7: The Unwanted Undead Adventurer (Light Novel): Volume 7
Book #8: The Unwanted Undead Adventurer (Light Novel): Volume 8