[No female lead + decisive and ruthless + the one and only god of death + invasions across multiple planes]
Blue Star has been under invasion from other worlds for a century, and fewer than one in ten humans remain.
When the strongest God of War, Tang Yi, watched billions of alien invaders tear through the final line of defense, he unexpectedly returned to the day before the invasion.
This time, he became the only God of Death in all the heavens.
Harvest the souls of alien races and unlock the powers of the God of Death; command the laws of life and death and tear open barriers between planes.
When the lofty gods of other worlds descended upon Blue Star, Tang Yi merely raised his scythe and said:
"On my turf, I decide who lives and dies."
[Planes already invaded: Abyss, Celestial Realm, Machine World, Cultivation World, Magic World, Insect Race, Titans]
[Upcoming planes: Quantum, Shadow, Time, Chaos, Origin]
No matter which aspect it is, it's a bit too outrageous.
A nice little book