Mercenary: From Black Beast to Mercenary King

[Alternate setting, multiple heroines, adventure, the protagonist doesn't spend much time as a human]

(No heroines during the Black Beast arc! I'll say it again: there are no heroines during the Black Beast arc!)

Dick was born on the continent of Celenus. After being bullied by the Church, he joined the Black Beast Mercenary Corps to seek revenge, following its commander as they built the empire mercenaries dreamed of.

Once his debt of gratitude was repaid, he set out to travel the world. Bringing together the strengths of the Black Beast Mercenary Corps, he eventually became the world's peerless King of Mercenaries.