High School DXD: the Gunsmith

Eden Asahi is the last Gunslinger alive after his village was attacked by the Freaks at age 10. 6 years later, he continues to do whatever he can to find out where the Freaks came from, and kill every last one of them with a unique Sacred Gear that can summon guns and ammo, while also learning that there are more supernatural beings that exist. OCxHarem & IsseixHarem