a disillusioned spec ops soldier on his "one last mission" gets betrayed and murked. A goddess revives him to "fix" isekais where the otherworldly hero summoned to save the world instead enslaves or oppresses it
It's episodic and he enters isekai worlds and rapidly assembles teams with his charisma and pragmatic real world attitude. He pulls together disparate rebel groups and takes out renegade heroes and leaves the world to them to clean up.
He starts saving "villains" to integrate them into his transdimensional party and starts building a whole infrastructure. The final mission is one where he has to take out a renegade goddess and her bastion world, a nightmarish fantasy planet ruled by a powerful god-emperor
