Apocrypha1

A reincarnated protagonist starts out weak and then gets overpowered. What I like is that he doesn't flaunt his powers over others. He's ruthless to his enemies, (ruthless that borders on cruelty), but shows love and compassion for his loved ones and friends. Also willing to go far to help those that deserve justice. His power is very interesting and sets him apart from other protagonists. He literally has the power of a god from the start while other MCs have to cultivate themselves to become one. 

Edit: It gets rough. REALLY rough. And tragic. So only those who aren't soft-hearted can finish this novel. But this was too hard for me which is why I dropped it. If you love fantasy/tragedy, this is for you.