The story of Hayato Fukuhara was never about power. It was about learning to stop holding on so tightly that you crush what you love. Sometimes, being an Overlord means knowing when to let go.
The series blends with shōnen progression tropes , often compared to Tensei Shitara Slime Datta Ken (for nation-building) and Claymore (for body horror & transformation). Ko Beast Overlord 2 Hayato Fukuhara
It is possible this refers to a very recent indie game release, a specific mod, or a fan-fiction series (like those found on platforms such as Fanfiction.net The story of Hayato Fukuhara was never about power