Check the community forums, choose the world then go to the thread the chaotic pks.you must have beaten all chaotic pks.there will be a post that there is still one chaotic pk left, the "eggmaniac". Then go to any stage with a battle area and natsume the "edgemaniac" will be there. Defeat her and go to the community forum again check the thread again and there will be a post that says he saw edgemaniac in the backstreets of breg epona. Go to breg epona then go to the place where you found the girl in white. Piros the 3rd will be there with natsume the "edgemaniac" forcing her give you her member address. She will give you her member address after some time talking about nonsense.
To do this you must have all 22 member addresses(includes natsume and tabby, sakubo counts as two)then you will have an email from cc corp.marriage is now available.then you will get a message from aurora. She will give you a greeting card. Send this greeting card to anyone in your member adresses with a color pink with 5 dots in his/her affection. Then play the world but do not log in just exit the game quickly. You should have an email from someone you sent the greeting card to. Check the email then log in to the world and you should warp to mac anu automatically even without going there. There will be a cutscene between you and whom you sent the greeting card.
Feel free to experiment on whom you will send te greeting card to.
When you have aquired the item indulgence(play the forest of pain event),give it to zelkova and customize his armor, add the indulgence item in his armor. It should change all damage to gp damage. And since zelkova has 99,999,999 gp, he should take less damage