Trinity woke up alone again the following morning. But when she entered the Grey Area, she saw that Axel and Roxas were both still around, talking with Saïx. She joined the three of them.

"Any news on Xion?" she wondered.

"No, but the imposter has been sighted," Axel replied.

"The one you mentioned yesterday?"

"The one who Xion was sent after," Roxas added. "The one who told her she was just a mistake."

"Ouch, that's harsh," she thought aloud. "Where was he spotted?"

"He's prowling Castle Oblivion as we speak," Saïx stated.

"Castle Oblivion?" Roxas repeated. "I'll go."

"Not by yourself, you won't. This target is extremely dangerous."

"Then how about I tag along?" Axel suggested. "After all, I know Castle Oblivion better than anybody else in this outfit."

"All right, better. Go, then, and teach this fraud the price for wearing our coat. As for you," he turned on Trinity, "don't expect you can go as well."

"I wasn't gonna ask," she denied.

Saïx walked away and Trinity, Axel, and Roxas left the Grey Area.

"So…this is exciting," she spoke up.

"It's dangerous," Axel replied. "You should go back and wait in the Grey Area."

"I'd rather not."

"You can't come with us to this castle, Trinity."

"I know. I just don't want to wait there with Saïx around."

"Can't blame you," Roxas cut in.

They fell silent as they continued walking. And they didn't stop until they reached a large set of doors.

"How have I never come across these before?" Trinity wondered. "All that time I spent exploring the Castle when I first got here and I have never seen these doors before."

"It's a big Castle," Axel pointed out. "There are probably a lot of rooms you've never seen before. Like the computer room, for instance. And then this is the library."

"The library?" she exclaimed. "So I could've spent my time reading rather than just sitting on my ass all day? Ugh…"

Roxas laughed. "Just wait for us in there, okay?"

"Okay."

Axel and Roxas then left through a dark corridor. Trinity walked through the doors, entering the giant library. The amount of books present overwhelmed her. And she had no idea how long Axel and Roxas would take, but she didn't care. She would preoccupy herself with looking through the library and seeing if there were any books that could help her with figuring out more about the Organisation. She had plenty of time after all since this mission could take Axel and Roxas all day or it could take them all of five minutes. It didn't matter to her. Besides, she was used to waiting by now.

She made her way to the second floor of the library and started browsing the books in the "O" section. Nothing came up about the Organisation, though. So then she tried to search for books based on each individual member. She made a mental note on how to spell each of their names. That was when she realised the "X" pattern.

"Wow, I am such a moron," she said to herself. "They all have an 'x' somewhere in their name. Damn, how has it taken me this long to notice that?" She shook her head. "Hmm. I wonder if it means anything…"

Just then, Axel appeared before her. She stopped dead in tracks.

"Done already?" she asked. "Does that mean you found Xion?"

"Yes and no," he replied. "We weren't in Castle Oblivion for very long. As soon as we walked through the doors, Roxas passed out. He's awake already, but—"

"Wait, where is he now?"

"I brought him to Twilight Town. He's waiting at the clock tower."

She let out a sigh of relief. "Anything else happen?"

"Well, before he passed out he mentioned that there were pictures rushing through his head. And didn't you bring up something about flashing pictures one time?"

"I may have."

"Hmm. And he thinks we saw Xion, but we couldn't tell. There were two people wearing the coat in Twilight Town and they both had their hoods up. One of them was definitely the imposter, though."

"That's so strange…."

"C'mon, we shouldn't keep Roxas waiting any longer," he then said.

And so they two of them made their way to the clock tower to join Roxas.

"Why would she do that?" the blonde asked after the three of them had been sitting in silence for a little while.

"At least we know she's safe," Axel pointed out. "She'll come back home when she's ready."

"But won't they turn her into a Dusk?"

"Not necessarily."

He sighed. "Who was that guy she was with? Why is she cooperating with him?"

"Maybe he's threatening her," Trinity thought aloud.

"Something tells me that's not gonna help him feel any better," Axel replied.

"I'm just saying. Don't jump to the conclusion that she's a traitor or whatever."

Another sigh from the blonde. "I think I'm gonna head back and get some rest. Are you two coming?"

"We'll catch up," the redhead told him.

With that, Roxas left. Trinity and Axel fell silent.

"Riku," Axel spoke up. "That's the imposter's name."

"How do you know?"

"Roxas called out his name before he passed out."

"But how does he know that name?"

"From a memory."

"So the imposter has a connection to his Somebody."

"Correct."

"You've dealt with this guy before, haven't you?"

He nodded. "I dealt with his Somebody and the imposter back during my first mission at Castle Oblivion. The entire team did."

"Is he a lot like Roxas?"

"Couldn't tell you that much. I mean, it's not like I become friends with the kid."

"Hah, true." She sighed. "What are you gonna tell Saïx?"

"I have no idea. I mean, it's too soon to report this incident. First I need to figure out why Xion is with this guy. If she's siding with him…"

"Who's the good guy here?" she then questioned. "The Organisation…and Riku?"

"I'll give you two guesses."

"Well, it's not like the Organisation is really all that bad, right? You just want hearts again. Where's the harm in that?"

He shook his head. "There's still so much you don't understand, Trinity."

"Hmm. I like to think I understand you, at least."

"Please, I don't even understand myself."

"Nothing wrong with that, if you ask me. I could teach you about yourself and you could teach me about myself."

He laughed at this. "C'mon, let's head back."

They then returned to the Castle. Axel walked Trinity to her room before going to his own. And once his door was closed, she turned right back around and made her way for the library. She had unfinished business in there. And now that she knew she had access to a plethora of books, she was going to use them to her advantage. Whatever questions she had left had to be hidden somewhere in that library. And she planned on discovering every answer. No matter how long it took.