People, Ghosts and Gods? Where Should I Go?

[The male protagonist's heart is dark] [Dark style] [Not brainless] Ghosts are rampant and evil spirits are rampant. They cannibalize human beings and do whatever they want. And those gods enshrined by the world are not compassionate. They secretly eat away at human faith and souls. In this desperate world, some human beings have become the dawn of hope, but more people, instead of uniting, kill each other and do whatever it takes for power and interests. The protagonist watches the world with cold eyes. He enjoys killing and regards everything as a game. Whether they are ghosts, gods, or humans, they are all souls under his sword. When he leaves this world he discovers a true horror...