I have tried many times to beat the Jade Oni but can't do it on my own. Is there anyone else out there who is also trying to beat him but can't? If so, send me a message and we can all help each other.
If you are still looking at this post, i am Nathaniel Deathflame and i will be glad to help you with the jade oni. If your reading this, meet me at the dungeon where the oni is held at 2: 30 AM on the Centaur Realm.