Yen Sid turned to look toward the kid, blinking when he said he was sent by Eraqus for training, which was impossible, seeing as how he died years ago. "I'm sorry, but I am a little occupied at the moment. This won't take long, however." He told him. He then turned to look at Riku. "To activate this technique, you must dig deep within your heart, draw upon your light power. Then, you must close your eyes, and use your mind to remember a world that you have been to. Once that memory has been recalled, put your hands on the floor on both sides of you, slowly drawing a circle with the light still out. Afterwards, a portal of light will open beneath you and you will fall into that world. A bit of warning, however, you can land anywhere and on top of anything in that world, so be careful." Riku listened and heard everything, before nodding to him. "Thank you Yen Sid, I will be careful when using this. Is there anything else I should know?" Yen Sid looked at him. "Only that you may not be able to use that to gain access to certain, dark worlds, or use it too many times in a day. Use it enough times and you can use it as many times as you need to without rest." Riku nodded, before he started to give it a go. Yen Sid then turned to Samantha. "Sam, was it? If you wish to follow him, you need to stand close and jump in quickly, before it closes completely." He told her as Riku was surrounded in light as he closed his eyes, remembering the first world to come to mind as he kneeled down to draw a light circle around him, opening a portal beneath him as Riku sank into it quickly. Yen Sid looked over at Mathias. "I do not know if what you say is true, but the master Eraqus has died years ago. If he truly did send you, why not?" He asked.
King Mickey smiled and nodded to Aerthex. "I believe I met her once, but it was a long time ago, I barely remember her. It is true that Sora was able to defeat the Organization with our help, but if too many heartless are destroyed again, I don't know if we can save Kingdom Hearts this time. We'll need to stomp out the problem as quickly as possible. I know it is easier said than done, but if we work together, we can accomplish this." He said.
Lexaeus smirked, the hint was too big, he already knew where to look. After all, when he was once Aeleus, he lived there, along with several others. "So you already knew then, good. I guess I'll have to send her a few 'gifts' for entertainment once I arrive at Castle Oblivion." He said, before opening a dark portal. He then turned to Jay, before going through the dark portal and entering Castle Oblivion's top floor.