Bruce
*Yumi listened and did her best to follow along. If she hadn't experienced heartless attacking her first hand, she would have probably tried to deny them existing. But they are certainly real...*

"That's... Unsettling... What is a "Keyblade" And what is a "Heart of s world"? Worlds have organs?"
Peggy
Lyon Looked at Nelra and pointed his ice cream at her.

"That I wish I had more information on. I forgot mostly everything about myself. Like the real important stuff, even how to move my own body it seems."

Lyon then would lean back into his chair and stare at the ice cream bar. 

"However right before I woke up to falling into the sky. I had a drea- no. More like I was outright shown a vision of the important people in my prior life by that girl I saw... Omori, Brid, Shriwind, and Chiri... The girl who showed me this theb gave me a hint to her name. It starts with and S. Thats all she said before i woke up. And that the Heart never forgets... With all these flashbacks we've been having. She does have a point.. But either way I think she might have been the reason I didn't forget a lot of important information on certain things. Probably to keep me from going in completely blind. I just need to be reminded then boom."

Lyon let out a tired sigh and with his free hand scratched his head. He looked to Yumi apologetically. 

"Sorry about all this. We're also in a bit of predicament as you can tell..."

Lyon then adressed Nelra's second question.

"Oh... That? Yeah, like this."

Then in his free hand Lyon flicked his wrist and then in a small flash of light and dark purple lighting, Lion's Resolved appeared in his hand. 

"I think it has to do with a flick of the wrist or something. That and you have to call for it within your heart. My has a sort of.. Warm feeling to it.."
Lyon desummonrd the keyblade now ready to address Yumi. 

"Okay.. A Keyblade is the manifestation of one's heart into a weapon of, as in my opinion, mass destruction. From what I was able to remember upon summoning, They choose their weilders, yes they're somewhat sentient, and attach themselves to the heart granting increased power, speed and endurance along with magical abilities. This is to help the weilder along better with become stronger. They as the name implies, are keys. They can open any lock and lock any lock. And I mean EVERYTHING."

Lyon would rub his temples a bit before continuing.

"What else... What else.. I think all i have left up here is that, they're the only thing that can actually kill heartless and realese the hearts they've consumed or allow hearts trapped in darkness to return to light. However they can also do the reverse and trap someone's heart as well. Weapons of Equalization these are that's for sure. "

Lyon chuckled at Yumi's second question to himself as he though about what she said earlier. 
"Okay so the heart of a world. First lets start small. Everyone has a heart, not the just the beating kind, Think metaphysical in this instance. A container of all your emotions and memories made manifest inside you. Thats what your heart is. And everyone contains both light and darkness in their hearts. You cannot have one without the other. Balance is key. Heh key... Now think of it on a larger scale. The world has one too. This is what keeps it from falling into the realm of darkness. However it is also the prime target for heartless as those who claim it, gain immense power. And... And..."

Lyon seemed to blank now trying to search for mlre information in his head.

"I.. I guess that's it. Seems all I knew at the moment is basic information... Well it got that job done.."
Matthew
Nelra blinked as Lyon casually summoned her keyblade before holding out her hand and attempting to do the same. Her hand would spark with a brief light before fizzling out, much to her frustration. She would huff at Lyon. "You make it look so easy..." She blinked as Lyon listed the keyblade's capabilities, looking back to her empty palm. "These weapons can do all that...? That's... Kinda scary. Wouldn't it be dangerous if someone bad got their hands on one...?"