.hack//sign- Castle-- Episode #14

When B.T. and Crim open the Twilight Eye, they are teleported to a catle that is completely upside-down. Crim said he only knew places like this exsisted in rumours. B.T. says that the Key of the Twilight should be in the sword room, so they head that way.
Tsukasa is late to join Bear and B.T. again, and Mimiru says that Tsukasa is a strong kid. Bear says he is, but sometimes Tsukasa's strength could backfire, and become self-destructive.
Sora is now following B.T. and Crim from far away, and they both know he's here. Crim says he will take care of Sora later, because he has an old score to settle.
Bear asks Tsukasa if he can use the words "bitter", "fantasy" and "mirror-world" to teleport them to the place. Tsukasa says he can, and he teleports them to the upside-down castle. They start to walk, and the floor beneath Mimiru crumbles. She almost falls, but Bear grabs her arm. She's scared-- it's the first time she's ever felt so scared in a game. Bear lifts her up. Tsukasa, meanwhile, is wide-eyed and says that he senses a great evil here. Bear thinks they should go, but Mimiru and Tsukasa insist to keep going.
Subaru, meanwhile aks if anyone had tried to contact Subaru. Silver Knight says that no one has tried.
B.T. tells Crim that there are only 5 or 6 more rooms to explore, and Crim should explore them because he's a faster character than she is. Crim tells him that she should go, and he will stay and fight Sora, since he was fast approaching. As Sora arrives, Crim and Sora get into a heated battle.
Tsukasa, Bear and Mimiru arrive at a room with four different coloured doors. There is a pinging sound that is made every so often, and they'd rather not find out what it meant. Tsukasa tells them they should go through the magenta door, because it feels the most evil. They agree to try the door.
Here is a conversation from the episode between Crim and Sora.
"Sora: Do you know why I came here?
Crim: You were probably tempted by B.T.
Sora: I'm not the one that was tempted! Get it? B.T. played you!
Crim: I'm aware of that."
B.T., satisfied with herself, moves on into a final room. She sees an old man. When Bear, Mimiru and Tsukasa approach the room, B.T. comes out of it, looking scared. She says they should all leave.
They enter anyway, and they ask the man what he is doing. He starts to go on and say things like "I'm sorry." But when he says "In her lies the dreams of all of us. Please take care of her." Tsukasa knows he means the girl.
Bear tells them that he's broken, and that the confused thought is just looping. Mimiru thinks that they'll never find the Key of the Twilight now, but Tsukasa says hemay have found it.
Bear thinks that they should leave now, it's looking too dangerous. They can't teleport out of the castle, because it's both inside and outside the game at the same time. They run out, but reach a dead end. The floor crumbles beneath Bear, and he falls. Mimiru tries to help him, but Tsukasa stops her from falling as well.
Then Maha appears, and Tsukasa asks what he's doing there. Then Guardian is summoned, and Tsukasa tries to stop it, but it shoots a tendril, and Tsukasa fades to grey. That means a character is dying, and Tsukasa feels pain in this game. Does this mean he's gone for good?