The LitRPG gateway
If you aren't familiar with the term, LitRPG is a genre where the characters are consciously aware of their "stats," levels, and power progression as if they were living inside a video game. It is currently explosive among middle and high school readers because it bridges the gap between gaming and traditional reading. Shirtaloon is arguably the most successful author in this space, and this series is the primary reason why.
While traditional fantasy might describe a hero getting "stronger," this book tells you exactly how many "essence" slots Jason has filled and what percentage his skills have increased. For a generation raised on the new world of fantasy media and RPG mechanics, this isn't just flavor text. It is the hook.
The polarizing protagonist
The biggest hurdle for any reader—parent or teen—is Jason Asano himself. He is an Australian guy who finds himself in a magical world while wearing a bathrobe, and he proceeds to talk his way in and out of execution for the next several hundred pages.
Jason is a specific type of "smartest guy in the room" character. He is an outspoken atheist, a socialist, and deeply skeptical of anyone with a crown or a fancy title. To a 14-year-old who feels like the world is unfair, Jason is a power-fantasy icon. To a reader who dislikes arrogance, he can be grating. If your kid starts quoting Jason, expect a significant uptick in "well, actually" energy at the dinner table. He isn't a bad influence, but he is a masterclass in weaponized snark.
Why the "evil" powers matter
You might see descriptions of Jason’s powers involving blood, shadows, and "afflictions" (essentially magical diseases). In most books, these are the tools of the villain. Shirtaloon flips this by making Jason a fundamentally decent person who happens to have a terrifying, "edgy" toolkit.
This creates a recurring theme about not judging books by their covers—or people by their power sets. It’s a surprisingly deep look at how a hero maintains their humanity when everyone around them expects them to be a monster. It’s less about the gore and more about the social friction of being the "scary" guy who is actually trying to save the village.
The stamina test
This series is a commitment. The books are massive, and the story moves at a pace that assumes you have nothing else to do for the weekend. If you have a reluctant reader who usually quits after fifty pages, the "just one more level" loop of the LitRPG structure might be exactly what they need to build some stamina.
However, be aware that the middle of the series moves away from monster-slaying and into heavy-duty inter-dimensional politics. If your kid loved the first book but stalls out around book four or five, it’s usually because the "game" elements take a backseat to dense world-building and philosophical debates. At that point, they might be ready to graduate to more traditional epic fantasy, or they might just be waiting for the next big boss fight.