Segador Mas

Segador Mas is a series which deals with the controls of reaping and judgement of souls.

Plot
"Segador Mas", or "Reaper More." Basically, in the series there are these things called Reapers. And A Reaper works for the Spiritual World, the person who employs them, is "Tianzhu", he's not god. But god's (first) son (His assistant is named Zeus, which is actually his younger brother of course he looks like a grown man. A joke in the series is that Tianzhu takes the form of a small mammal, and he has a high pitched voice, so he's always being made fun of and complaining. He gets mad when Zeus is formal with him, since they're brothers). Tianzhu is just in charge of the Reaper part of the Spiritual World only. What a Reaper does, is Reap souls. They cleanse the souls of those who died, and bring them to the underworld for Judgement. This is not kept secret though. Normal people are aware of the afterlife, spirit world, ect. The reaper system acts as a job, as people do it for money. Every 6 months there is an exam, and "try-outs", for the job of reaper. Since it's a high caliber job, few actually get accepted by Tianzhu. Elianthoes Diablohoes is the leader of Underworld on the other hand. He is in charge of an army of demons. He commands his army of demons to reap to turn them into demon foot soldiers. Since he wants to have a strong army. This disrupts the balance between the two. Since when a demon reaps, the person is automatically turned into a demon, they aren't sent up for judgement. Another concept in the series is called a "Demented." Demented are once human souls who stayed out too long and became corrupted, they like destruction and know nothing more than that. They're more of monsters. Other type of monsters in the series exist, vampires, werewolves, ghost, ect. But those clans usually stay down in hell. When a Demented rises up, it's a Reaper's job to take them down. A-B Agony, is a group of intelligent humanoid Demented who are able to think and stand up for themselves. They believe that they should still be alive, even though they're corrupt. Reapers each have weapons called  "Grazors", used to intensify their powers, (I'll go into the battle system in a second. It's kind of complicated.) Underground Mafias have began to distribute and sell Counterfeit Grazors to actual humans. This is an issue because these can reap as well, turning the reaped souls into soldiers for the Mafia. Giovanni Lazzarati is the leader of this Mafia, the Mastermind behind it. He's a strong fighter, and his family is dangerous too.

Ax Battle System
AX Battle System

Demons
Their age in physically would be 20 times that in Demon years.