Seeing the peaceful look of both Yoruichi and the sleeping Kisuke on her lap, Aika and Koneko slowly approach them, "How are you and Kisuke-senpai, Yoruichi-san?" Koneko crouched down to examine Kisuke and Yoruichi, especially the large wound on her back, "We got a new member that can heal. Do you want me to call her?" She continued.
"It's fine. Take a closer look." Yoruichi didn't look at her and just caresses Kisuke's pale blond hair with a gentle smile on her face, 'I'll have to scold them later. If they're in Onmitsukidou (Stealth Force), they would have been kicked out with heavy punishments.'
Aika and Koneko followed her words and look at her at the large wound on her back. The edges of the wound are slowly moving inside leaving only pure and unblemished skin, "It's healing so fast!?" Aika shouted in disbelief and a few seconds later, sighed in relief along with Koneko, 'I guess everything is settled.' They sat down near Yoruichi and Kisuke and waited for him to wake up.
Once Yoruichi regained her full control of her Reiatsu, she took out four throwing knives with complicated inscriptions on their handles. The two spectators were disturbed again as they thought something has come up again. Yoruichi ignored the two's questioning gaze as she charges the knives with her Reiatsu. When the knives are fully charged, without looking back, she threw them towards the hole on the wall of the training ground that Kisuke created with his Cero which unknowingly expanded to 150 meters across the short time they weren't looking. The Dimensional Gap is slowly 'eating' the training ground from the outside because of the barriers being broken, although not entirely as they're still keeping the whole training ground from disintegrating.
The knives are traveling together at very fast speeds and halfway through their destination, they separated into four different directions and hit four corners around the hole. A line of light connected them and conjuring another transparent wall of light, covering the entire hole and effectively stopping it from getting bigger.
"Amazing... There are so many tricks that you know. Anyways, why does the outside look like a kaleidoscope world? Is that a barrier too?" Aika was awestruck and voiced out her curiosity.
"That's not a barrier. That's the Dimensional Gap." Koneko was the one who answered her question and asks another one to Yoruichi who's wound is almost fully healed, "The training ground is in Dimensional Gap?"
Yoruichi looked at them for the first time and nodded at Koneko, "You're right. This place is in Dimensional Gap. Since young, Kisuke goes overboard with his secrets. He gave you a false impression that this is underground as he calls this 'The Secret Underground Training Ground', but in reality, he stabilized a piece of space inside the Dimensional Gap to serve as location of this place and placed various barriers to hide it's existence as he doesn't know if some other being is traveling within this Gap but he assumed that there is. Well, it's not like anyone can find this place as according to Kisuke, the Dimensional Gap space's rules are messed up and the only thing working properly is the temporal dimension. You have to deliberately look for this place to find it."
Koneko looked down on contemplation, but Aika didn't understand what they are talking about, obviously, "Wait, what is this Dimensional Gap?"
"You can think of it as space separating many worlds where the supernatural things in a normal human's point of view reside," Yoruichi answered her question patiently. This free time can serve as lecture time for Aika.
"Many worlds where supernatural things reside? You mean those Devils and Angels have their own worlds?"
"Yes. They are called 'Underworld' for Devils and Fallen Angels and 'Heavens' for Angels. These two are the largest worlds as they exceed Earth in size for who knows how many times. That's according to some books that are available to us. Kisuke can't confirm this and wants more records of this topic. That's where the bet with the StuCo President comes in. She's an ojou-sama after all and would have access to certain topics that aren't available for the public."
"That makes sense. I thought that those beings were just blending with humans to live. It's amazing that they haven't invaded the Earth yet if they have this kind of power." Aika looked back at the hole that Kisuke created and muttered.
"It's not like they don't want to, it's just that there are too many factions that would fight for it and will only end up destroying themselves and the Earth in the process. They don't want that to happen as Earth is a very special existence because all other worlds are somehow connected to it as serves as the transport hub for them. And we don't know why that is the case. But we're sure of one thing, outer space doesn't exist in any other worlds."
"Outer space? Only Earth has access to the universe? That pretty cool. So, have you gone to anywhere besides the Earth for you to know all of this?"
"Yep~. We sneaked to the Underworld to have some fun in the past." Yoruichi's smile grew bigger as she remembers the past.
"Please take me with you to play if you're going there again! One more thing, what do you mean when you said that the space rules in Dimensional Gap are messed up?"
"It means that direction doesn't exist. You can move around but you don't know which way is left, right, up and down as you can't designate anything as a point of reference. Distance is also nonexistent because you can travel as far as you can but still not move from your place."
"It's hard for me to imagine how that works. Can I try going there?" Aika faced the hole and asks.
"If you want to disintegrate to nothing, then you're free to try. That place is more merciless than outer space."
Aika scratched her head in embarrassment, "Hehehe, I'm just joking."
Aika continued to ask more questions and Yoruichi patiently answered her and sometimes Koneko would chime in.
Fifteen minutes into their discussions, Yoruichi's eyes suddenly grew wide open and Kisuke was woken up from his stupor and hurriedly got up. The both of them stared at the hole that leads to Dimensional Gap.
Aika and Koneko were both happy that Kisuke already woke up but saw something wrong at their expression as they have a very serious one that they don't often have. Both of them also stared at the hole to see what's going on and what they saw scared the hell out of Aika again.
"A giant flying liz---!" Aika exclaimed but Koneko was able to shut her mouth with her hands before she completed her sentence.