That took Siyeon aback again and she blinked a few times while Kai looked at her with slightly closed eye lids. “I'm not going to hurt you... not today.” Well, that was very reassuring... not. “I would appreciate it if you wouldn't hurt me at all,” she muttered as the world around them started to fall apart. “Hurry up, or we will be forever lost and never will find back.” Kai sounded as calm as Siyeon was about to panic and instinctively she found the path to her core world and pulled Kai along.

They fell right into her world and Siyeon fell pretty hard while Kai landed really safely. “Oh my, what a mess,” he whispered as he looked around. A small frown appeared on his face as he leaned back to look at the chaotic play of chaos. “There is no personality in your world.”

It didn't wonder Siyeon that he had noticed it just like Sehun and she let out a sigh. “I know, Sehun already pointed it out. With a little bit of concentration, Siyeon created a room around them and the chaos disappeared. “Wait, wait wait,” Kai said immediately, the frown on his face even clearer now. “Your house only appears when you concentrate on it?” he asked and Siyeon nodded. “Yeah... is that strange?” His gaze was enough to tell her that it was strange indeed. “Usually, the house will stand there and never disappear once it is there. Strange that Sehun didn't point it out. Well, whatever. I think it is mostly due to your weakness and your lack of control of your powers, or rather your lack of powers. Here are no windows...”

It was a bit hard to follow Kai's thoughts, and as harsh as his words were, the comment about the windows bothered her more than everything else. “What is with those damn windows? Even Sehun put them as priority.” A grin appeared on Kai's face; it was his usual grin but it didn't ease Siyeon at all. “It wonders me that he didn't tell you the reason why windows are actually so important in your core world. He surely told you that the power core is – as the name say – the core of your power and the core world is just a simple projection of it. Correlating with your dominating element, you can mold your world how you like it.

The outside, as for example the water in my core world, is the raw power. Raw, dangerous the source for every attack or defense magic we use. If you paid attention to class, you know that we can, indeed, control all elements, though our dominating one will always be our strongest. Since you have solid walls around you without any windows, you don't have any access to your raw power, that's why windows are so important. They are the connection between your hose, which is the control center, and your power source, which is everything else, which is not in your house.

The bigger the windows, the more powerful you are.”

That's why there were so many windows in Kai's house, and they had been huge. “Wait, if you guys use your powers that way, then why do you guys need those houses?” Siyeon asked curiously and Kai c