.hack//sign- Twilight Eye-- Episode #13

B.T, now getting even closer to finding the Key of the Twilight, finds out that before she and Crim can go to the castle where the Key of the Twilight exsists, they need to open the Twilight Eye first, otherwise it will be useless.
When Bear finds out that B.T. is going to search for the Key of the Twilight with Crim, Bear gets angry that B.T. would do something like that. But then he says they will probably be rivals, as Bear, Mimiru and (maybe) Tsukasa are also going to search for it. Bear can always find optimism in bad situations.
Mimiru recevied a message from Helba, telling them that they can get to the place where the Key of the Twilight is without making the Twilight Eye open. This would be possible by using three words to teleport to the place. But they would need Tsukasa to do it, because they didn't know the words themselves. The will laster find out the three words they'll need Tsukasa to say will be "bitter", "fantasy" and "mirror-world". When Bear next tells Mimiru the secret he was keeping from her: the secret about Tsukasa. Mimiriu gets angry that Bear didn't tell her earlier, but now knows why Bear wants to find the Key of the Twilight in the first place. This could be the thing that helps Tsukasa return to the real world.
B.T., again talking with Crim, tells him that the Twilight Eye will need a special condition to open, because the Key of the Twilight is a very special item. She says that The World RPG was released in 2007 as a BETA test, and when the full version was released, all of the old data may not have been deleted from the servers. The old un-deleted data may give some sort of a clue.
As Bear and Mimiru continue their talk, Tsukasa comes in and says that he wants to come with them to search for the Key of the Twilight. He also asks that if they find it, he could use it first. Bear and Mimiru tell him of course he could, but ask why. He says he wants to use it to open "her" eyes.
Crim is starting to get an idea where the Key of the Twilight could be. From the early prototypes of the game, there was a lot of data lost, but pieces still remain. He could be correct.
Bear, Mimiru and Tsukasa head over to Subaru, but see Silver Knight instead. They ask if he knows anything about a legendary land. Silver Knight tells them there are three, that are remnants of war. This throws them off track for a while.
Late in the night, we find Bear in a temple of some sort. He says he wants to know who called him at such a ridiculous time of night. A woman appears, and he knows who it must be-- Helba!
Crim is now certain he knows where the place is. B.T. and Crim end up in a place they've never seen before, a very eerie looking place. To search it, B.T. does her thing. "I am a Wavemaster," she says as she blasts away rock with a very strong attack from her staff. After the explosion is over, the sky goes dark, and the gigantic Twilight Eye opens up.