The Reaper's Battle Arena

After death, your soul enters the Underworld, only to discover that things are not so simple. It turns out that evildoers must continue to struggle in the Underworld after they die, all for one reason: to be born into a better family in their next life. This place cannot decide your future, but it can decide where you are born. If you want a better next life, work hard and fight with all you've got! (This is an original infinite-world story. Stay tuned!)