Into the Void

Callum tried to live a normal life. After leaving his previous one, he wanted to trade fighting and killing for living a reclusive life in a remote forest, with a few people to keep him company. Fate had a different idea for our protagonist. After losing two important people, Callum allies himself with powerful gods and warriors to combat a sinister terrorist organization. Fighting alongside him are the dragon sealed in his sacred gear and a group of mighty women, the latter group being head over heels him.

(sorry for the crappy summary, just give it a shot if you're curious)