After the game is complete
After you defeat the final Boss and the credits roll, save your game. When your desktop appears you will have new mail. Read the e-mail from Aura (which is unscrambled unlike her others). She tells you to go to Delta: Bursting, Passed Over, Aqua Field with Orca, who is now out of the hospital. Go to the bottom of the dungeon and Aura will give you the Book Of Daybreak, which allows you to use your Data Drain and Gate Hacking abilities again. After you log out, you will receive a message from Helba. She gives you member addresses for a lot of characters from .Hack//Sign, along with hers. The members addresses you get are for Helba (Wavemaster at level 99 with maxed out stats because she is a hacker), Tsukasa (Wavemaster at level 1), Subaru (Heavy Axeman at level 15), and Sora (Twin Blade at level 90). You will also receive another e-mail from Aura after receiving the Book Of Daybreak. You will get the Keyword Omega: Hidden, Darkside, Holy Ground. You will be accompanied by Elk for this dungeon; choose another character that has good strength. When you get to the last floor (there are fifteen floors and each contains many Data Bugs), you will fight a boss which resembles the guardian from .Hack//Sign and the Gate Hacked dungeons you went to earlier in the game. When you defeat the Boss, you will be able to choose Mia as a character again and receive two FMV sequences to watch on your desktop.