"What the hell do you mean this is not on the earth? Where the heck is 'Fansia'?!" With confused mind, Daimon screamed, and Alhae-kan was also talking to himself in his own world. "HA! Everyone looked down on my work! But look at it now! I successfully summoned a person from another dimension! My theory and research is now accomplished!"
After hearing what Alhae-kan was saying, Daimon replied to him with deeply irritated voice, "That is your theory and your research. What about my life? I've studied so hard to prepare myself for the SAT and stuff. Damn it, why did I even studied at first place if I will be ended up getting summoned into random world? You better send me back to where I was."
At Daimon's request, Alhae-kan shook his head. All he was trying to do was proving that there were also people who were living in different dimension, therefore he was lacking the knowlege of sending one back.
That was where Daimon's ultramundane world survival began, and that was also how Alhae-kan became the teacher and the guardian of Daimon because he felt the responsiblity of summoning Daimon.
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At frist, Alhae-kan planned to teach Daimon just for enough to survive in Fansia. However, as he taught, he found how smart Daimon was. Daimon understood any formula whether how difficult the formulas or not, and even he created his own way to understand and enhance such formulas. Alhae-kan felt a shudder about Daimon's intelligence, and that made him to change his plan. He officially offered Daimon becoming his student to teach magic.
Daimon did not turn back on Alhae-kan's offer. Daimon thought learning magic would be the only option that he could go back to his home. With his knowlege-which was from travelling the dimensions-, Daimon needed only 20 years to become the Archmage which is the master of the Mana and magic.
"People called me the genius of the centuries, but took me 70 years to understand the Mana. Your talent is beyond my understanding. I taught you everything that I know, and we still cannot figure the way out how to send you back home world. I guess it is the time for you to travel the Fansia and find your own way." Alhae-kan said with respectful voice, and Daimon nodded for agreement.
Therefore he travelled, and found the way, then he heard the news of Alhae-kan had returned to Mana. That is why Daimon was now taking care of keepsakes from Alhae-kan because he was Alhae-kan's only official student, and only friend that opened and shared one's mind.