Booktuber Daniel Greene's Upcoming Progression Fantasy Novel "Better Dead" Shares Similarities to the Fantasy Manga Series "Centuria"

I couldn't help but notice booktuber Daniel Greene's (aka: the Disheveled Goblin) survival horror progression fantasy novel he's taking to trad publishers sounds similar to the lesser-known manga series "Centuria." I believe Better Dead will be a progression fantasy, it sure sounds like one, but I may be wrong. Information for his book isn't widely released yet.

Wiki's summary of Centuria:

"Julian is a young boy who, after killing the blacksmith his mother sold him to, flees as a stowaway in a slave ship. Once discovered, he becomes a slave himself but is welcomed into a close group of slaves who support each other, especially Mira, a pregnant woman who shares her food with him and takes him under her wing. After trouble aboard the ship, the slaves are slaughtered by the indebted captain, but this accidentally calls forward an eldritch sea entity who, for the blood of the 100 killed slaves, including Mira, gifts Julian with their combined strength and their 100 lives. Now empowered and indebted to the 100 slaves killed protecting him and Mira's newborn daughter, Diana, he sets off to a new country to raise her."

His idea is a bit different, focusing on a mage who is washed up on an island, but he's mentioned that environment will feature monsters, magic, and religious themes; a few traits Centuria shares.

It would be interesting if he finds out about the manga and reviews it. He still seems to be a manga reader/reviewer, but his channel has relatively moved on from its One Piece heyday.

Edit:

This post wasn't meant to imply that Daniel copied Centuria's premise.That wasn't my intent. I wanted to share how both ideas are similar and that it would be interesting if Daniel became aware of Centuria.