Constellation Keys

"A Glass Key? I have never seen this kind of Key." Lucy said while observing the Key that Xin was just shown.

"From what I know, there's only three types of Key, one is Gold Keys, Silver Key, and an Infamous Black Key, but I never heard of a Glass Key," Makarov said.

He is a fairly knowledgeable person so his knowledge is cast differently from Lucy and every single one of the merge, even Levi who is a bookworm doesn't even know what kind of key is a Glass Key.

"You can call it "Twelve Constellation Keys ``. I made it in the past and just re-made it last night as a prize."

"You can make Celestial Keys!?" Lucy was shocked, no one knows how Celestial Keys are made so she never heard someone can make it.

"That's right if I remember correctly, i made it when I'm five."

"...."

"Actually the owner of the Keys is my Celestial Peerage. When I visit one of the other worlds, I choose a theme and train so you can feel relief that they are stronger than any other Key."

"And before i forgot." Xin then takes out a Dark Colored Key with a shape of the sword." This is one of my personal weapons, you can win this, of course, this Key is not only for Celestial Mage but also for everyone."

"Really?"

Xin nodded, he then stood up and started gathering magic into the key.

"Open the door of Sword Maiden: Black Imperial Sword Judecca"

A black door suddenly appears in front of them, and slowly, the door opens and a black sword comes out.

Xin casually grabs it and shows it to them, but who knows that everyone is lying in the ground while looking at the sword he held in fear.

"Eh? What's the matter?"

"H-Hurry, hide it away Xin!" Makarov said.

Xin hurry cancels the summon making Judecaa come back to DxD world.

After the sword finally de-summon, the suppression and aura finally disappear, everyone slowly stands up wiping the sweat on their forehead while grasping air.

"That's scary, I have never felt that kind of aura in my whole life." Lucy said.

"That's right, I feel that my Dragon Magic is trembling in fear."

"Father, is that your weapon!?" Erza hurriedly asked.

"That's right."

"Father, let me use it." Knighwalker hurriedly asked.

"You want to use it?"

Knightwalker nodded.

"No," Erza hurriedly said.

"And why?"

"You're too weak, you can't even stand up from the password aura from the sword and you want to use it? Are you an idiot?"

"You're the idiot here."

"Okay stop, don't fight here, if you want to use it, you can have it here." Xin passed the key to them.

"I-Is this fine Father?" Knighwalker nervously asks.

"Yes, but before you become happy, i will inform you that you need a huge amount of Magic Power to summon, Judecca, and from what i see right now, you can summon the sword but only for a couple of seconds, more precisely 3 seconds and that is your maximum capability," Xin said.

"What about me?" Erza asked.

"You're different, you can use Judecca for half of a minute before getting drained by her."

Erza looks at Knightwalker proudly, showing off the vast difference from the Magic Power to both of them.

"Good, I want to train Father to help me."

"No need for a father, I will train my little sister."

"And when did I become your little sister?"

"Want to fight Ms. Couple of seconds."

Xin ignored them and let them fight, he then look at Lucy teasing said," So Ms. Lucy, do you want to try it?"

"T-That….. Can I ask you how many seconds is the duration if I summon Judecca?"

"In your condition? Well....."

Gulp!

Lucy nervously looks at Xin, waiting for the result.

"You can't use Judecca, she will drain you and your Magic Power is so small that you can't even open her gate."

"Aw~ just like what i expected."

"But don't worry, my other key is easy to open," Xin then passes a key to her." Try it."

Lucy nervously looks at them with a strange symbol on it, she then tries to use it.

"Open the Gate of Celestial Lion: Leo" Xin said.

"ROAR!"

A crystal door appeared in front of Lucy, then it slowly opened, they heard a thunderous roar of a Lion and slowly a being came out from the gate.

A beautiful young woman who has long brown wavy gold hair and gold-colored cat-eye.

She looked around confused but seeing Xin, she was closer while carefully looking at him.

"I feel I see you somewhere, my instinct telling me that I'm pretty close to you? Can I ask you who are you Youngman?"

"Good to see you healthy, Misla-nee."

"You are?"

"It's me Xin, it's been a while, i never expect to see a huge change from you."

"It's you Master Xin," Misla was surprised to see Xin after a long time, but there was a huge difference because when she last saw him, he was a kid.