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Let me just see if I got this right, you and these cards are from an alternate reality where the souls of dead heroes and villains fight for the chance to win this 'Holy Grail,' and that you came here by using an incredible type of 'true' magic called Kaleidoscope that lets you travel to different worlds?" he stated as he began rubbing his temples.
"Different times and versions of that war but yes that is the general idea, glad you understand it," commented the magician, ignoring the death stare that Issei sent his way. "Now then, time to check to see if the cards are working properly, boy I need you to use the Lancer card."
Issei debated disobeying just to spite him but as usual his common sense quickly made him throw that option out the window and the teen sighed before he grasped the glowing card, "Include Lancer."
Sure enough the card's glow intensified before it morphed into the recognizable shape of Gae Bolg, resting comfortably in the teen's grasp. Zelretch just walked over to examine the spear before he muttered more words in a language Issei didn't understand and nodded, apparently satisfied with his recent test.
Seeing this Issei dismissed Gae Bolg, which then transformed back into the card that he then put back in the holder. As he looked at the other six in the holder Issei's curiosity began to grow at what other Noble Phantasms each contained.
"It won't work," informed Zelretch, guessing his thoughts.
"What do you mean?" replied the teen as he put the other six cards back into the holder.
"Each of those cards require you to be in tune so to speak with the Heroic Spirit it contains in order to be used, so far you only have a high enough connection to the Lancer class. The others might as well be tarot cards for all the good they'd do in combat," informed the magician.
Issei just sighed, "So how do I increase this 'connection' to the cards?"
"They'll naturally increase over time and with training, but the process can be sped up in different circumstances depending on the Heroic Spirit itself," elaborated the magician.
"What do you mean?" the teen asked with a frown.
"If you find yourself in a similar situation that the Heroic Spirit faced then it will likely improve your connection to that card," explained Zelretch.
"And how am I supposed to do that? The chances of that happening is slim to nil," complain Issei.
The magician nodded happily, "exactly which is why we will be focusing on training instead."
"Training? Where am I supposed to do training?" he grumbled.
Zelretch merely smiled while gesturing to the area they were in and Issei blinked as he saw an entire underground cavern beneath the café, "how the hell did you make all this? Scratch that, how did the real owners of this place not notice it?"
"Magic," replied Zelretch with his annoying grin that once again caused Issei's eye to twitch uncontrollably.
Taking a deep breath the teen tried to put away his frustration for the trolling magician aside and smiled as he imagined chasing the old man around with Gae Bolg. "So how do these cards work? You said they contain Heroic Spirits, does that mean that anyone could use them?" he asked, worried.
Zelretch just shook his head, "no the Heroic Spirits may reside in the cards but they are bonded to your soul now Issei. You're connected to each of them in ways that even I struggle to comprehend."
"So could I use their abilities without the cards?" Issei replied, eagerly.
The magician just gave him a deadly serious look, "in theory yes. But in doing so you will likely suffer irreparable physical and mental changes. These cards act as catalyst for you so you can easily activate the Servant's power but they are also your protection, preventing your mind from being consumed by theirs."
"Even with the cards, using Install still has major side effects," muttered the magician quietly.
"Install?" repeated Issei.
"Something you're nowhere near ready for yet boy, stick to Include for now," ordered Zelretch, sternly and getting a nod of understanding in response.
"Good now that we got that straightened out, are there any more questions before I send you back home?" asked the magician.
"Yeah if Cú Chulainn is in the Lancer card then who are the other six?" questioned Issei, only to groan as he saw a smug smile spread across Zelretch's face.
"Now why would I tell you that? It wouldn't be nearly as entertaining for me if I did that now would it?" laughed the magician.
"Fine then at least explain to me who the hell was attacking me earlier and why! You can do that much can't you?" growled Issei, his short patience long since expired.
"Fair enough," conceded the magician as a smile spread across his face. "Now listen up, you're about to hear a story courtesy of good old uncle Zelretch himself."
"Oh goodie," deadpanned Issei.
Ignoring his unenthusiastic listener Zelretch continued, "you see it all started with the three Biblical factions…"
Issei frowned as he made his way back home and sighed as he thought about how badly the day had gone, 'first time I get a girlfriend and she tries to kill me...damn Lancer luck. Still who would have thought that Angels and Devils exist and that God is dead.'
The teen was quite shocked when Zelretch had revealed that little tidbit of information but just used it as a reminder that no one was invincible and that he shouldn't get cocky with his power. 'Raynare said she was after me for my Sacred Gear, did she just mistake the Class Cards for one?' he pondered as the teen approached his house.
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If you want to read ahead by 10 chapters from her you can visit my Patre-on.
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