Kisuke watched the footage he prepared with Soifon which was mostly their daily lives, the Azazel Cup, the Hell Disaster, the Evie leader's attack, and some snippets of the final battle with Tiamat and Chaos. He also included some footage from the Evil Dragons' resurrection and Trihexa's rampage even though neither he nor Yoruichi were around for it. Though he was really only watching Soifon's dumbfounded reactions and enjoyed himself.
In every scene, Soifon could only be more and more confused even though Kisuke was providing her some verbal context and a few hours later, their movie viewing concluded.
"And that's the gist of it," Kisuke said while turning off the holographic device that turned the room they were in into the scene they were watching, making it as if they are included in the scene.
Although Kisuke sadly couldn't recreate the intensity of the scenes, Soifon still managed to understand a bit of it, especially the large-scale battles that changed the terrains, "...What in the world just happened?" These are Soifon's first words after a long while.
"Oh. You mean this?" Kisuke asked while patting the crystal which was the source of the holographic images on the table, "I created this after studying some illusion techniques employed by various Deities and Youkais. It became pretty popular on that side... for various reasons. And I don't think it'll take long before someone creates an interactable virtual reality with it... This won't affect the population count negatively, will it?" At the end of his sentence, he started muttering after realizing what massive damage this could do especially at the time when they need more people than ever to support and supplement the giant leaps in civilization on Earth.
"...Then the place you two went to is really..."
"A whole new different world. It appears that Byakko is not originally from this world and already had the world-hopping ability before it came to the Shihouin Clan. And thanks to Benihime ripping out both of our souls and the Hougyoku protecting us to properly travel with Byakko, we ended up reincarnating."
"...Reincarnation... Then that Urahara Sakura..."
"Is my mother, yes. We also found Yoruichi's parents but she was abandoned due to trivial reasons and their family itself is rife with abuse on both sides and already collapsing so we didn't bother interacting with them. It was a good thing that she didn't have any siblings that we had to rescue."
"You believe that she's your mother?"
Kisuke looked at her seriously and said, "Of course. She's my mother without a doubt and as an extension, also Yoruichi's. Regardless if I really came from her or not, even if I have the memories of my previous life, it won't change the fact that she's been a wonderful mother to me."
Soifon was a bit startled and cleared her throat, "I apologize. That was a rude question. I just didn't know where to start."
"That's fine. Just slowly think about it and ask whatever question you have. We're not in a hurry so let's take it slow."
Soifon took Kisuke's offer and requested to replay the motion picture, this time, pausing at certain moments and asking him what was happening in more detail.
It took almost a day for them to finish everything and even then, Soifon still couldn't wrap her head around on everything she just saw and heard.
Soifon was about to get depressed when Kisuke reassured her that it was only normal for her not to follow as there was a limit to what he could explain. As Kisuke still hadn't delved deep into what Magic and Ki could do and the various cultures and races that use it, it's perfectly normal for Soifon to be confused by all of this.
"I still don't understand everything, but it seems that you're still in the top few on that side."
"That's due to that side not being very well versed in matters regarding Spiritual Power. And thanks to the Hougyoku's assistance, I was able to get far."
"Hougyoku... Do you intend to make another one?" Soifon stared at Kisuke and within her eyes, there was even a hint of hostility.
Kisuke smiled wryly and shook his head, "No. And I don't think I'll be able to create another one."
Naturally, Soifon didn't believe him, "Not able to create one again? You and Aizen created the first one and you made the second one. What's stopping you from doing the third?"
"The Spirit King." Answered Kisuke, "Or more specifically, his absence."
"...What do you mean?"
"It's hard to explain it, but essentially, even though he's tied up there, he still could interfere with the world. But now that he's gone..."
At the mention of the Spirit King, Soifon was reminded of Aizen's ability, "Did you become someone like Aizen?"
Kisuke shook his head, "No. While I'm hard to kill, I don't have the same immortality and destructive force as him. You saw some individuals who are clearly on a different level, right? Aizen is almost on that stage and the only thing that's stopping him from stepping on that is the fact that he's sealed."
Soifon became quiet.
"By the way, do you finally believe that Ophis and Lilith are not spies?"
Soifon straightened her body and intensely looked at Kisuke when she was reminded about them, "That's right! What's up with them!?"
"Probably the same as the Spirit King, born out of nowhere, but unlike the former, didn't care about the world until recently. Ophis is the Dragon God of Infinity and living up to her name, she's an [Infinite] existence until a [Dragon Slayer] finally got her and she had to split her power. That split power was used by someone and created essentially a copy of her and was named Lilith."
"So they are not twins... But since Lilith is part of Ophis, couldn't she just absorb her?"
"If she didn't meet us, she may have. She's very proud of her power as that defines her entire existence. However, she became much more interested in life than the power she held. Lilith is a life born purely out of her power so her curiosity gave her a chance to live. And right now, if you ask her to absorb Lilith back, she'll get very angry. Even though she became weak for being 'incomplete', she could still wipe out a portion of the map."
"And why is someone like that attending the Spirit Academy? And she's a Dragon, so how are they fooling everyone?" Soifon asked. While she still couldn't believe that those little girls were capable of mass destruction on par with Aizen, she was more curious and afraid of their real intentions.
"Her [Infinity] mostly means limitless possibilities so that gave her a true shapeshifting power. In other words, she can transform into anything she can think of. Human, Spirit, man, or woman, any transformation they do is their true self. They transformed into Plus and were able to enroll in the Academy. And for what reason? It's because they are children.
"And although their common sense is catching up to the standard, they're still incapable of fully mingling and adapting to Human society, especially a normal one. They don't want to be left behind by the other girls so without much of a choice, we enrolled them in Spirit Academy to experience their school life."
"...That's ridiculous."
"Right? But I consider them as my daughters so I'll do everything I can to have them enjoy their lives and stop everyone else from taking advantage of their power."
Soifon wanted to tell him that he's not that kind of person but stopped herself after hearing the conviction and weight behind his words, "...And what about this Flanna? She has the same face as the other two."
"That... I'd like to keep it a secret for now."
=================================
AN: I'm having a hard time portraying Soifon's 'surprise' here so I'm providing more context here in the Author's note. I'm sorry for my lack of ability. Instead of being shocked, she's more confused. Although she could see the destruction the characters of DxD can do, she has no idea of the intensity of the battle going on as I've written.
Issei and co. are capable of mass destruction too, so Ophis' power is hard to see from just a video no matter how immersive it is with 360 viewing. As such, it became not that impressive.
So in this, the exact thing that Soifon couldn't understand is the 'concepts'
Soifon doesn't get the Divide and Boost. She doesn't get the concept of Super Devils or the unique abilities of each Gods. The same with [Infinity] and [Dreams] she doesn't get any of it since the only metric she could compare with is the resulting destruction. And even that is not reliable since she also doesn't know each person's resistance.
In other words, it's like the physicists smashing atoms using the LHC. To normal people, it sounds awesome, but to physicists themselves, it's almost a miracle-making device as they understand how and why it works. In this case, Soifon is the normal person.
Another example of this is Yoruichi's ability to cut space itself. From a normal person's point of view, another person and Yoruichi cutting a tree is the same as it has the same result. However, only those who could understand what's happening knows that Yoruichi's cut is much more terrifying.
Similar to those on the DxD side, they wouldn't really understand Aizen's hypnosis or Shinji's bankai by just watching it through a video clip.
And that's the end of my lengthy AN due to my having a skill issue. Thank you for reading.
TLDR: Soifon is more confused than shocked because she doesn't understand the underlying concept of the DxD side's power.