[Ao]

Kurumi's guns; flintlock pistol and musket are currently pointing on Shido's head.

"I will comply but first, you need to come with me. I'm gonna show you something."

Kurumi thought it might be a trap so she shook her head.

"I think I couldn't do that. I need to get over with you now so let me kill you and consume your power."

The hammer of her gun lifted and ready to shoot him but her body freeze when she was about to pull the trigger.

"Don't worry. I'm not gonna hurt you."

Although Kurumi know this but she couldn't believe that the person in front of him is much stronger than her.

She already activated her angel but Shido could deactivate it like she didn't activate it in the first place.

'Who really are you ?'

That's what her eyes said to him.

Shido could tell that so he answer her.

"Itsuka Shido. You might never believe in me but I'm truly me. Then let's go."

The location didn't change but the clouds are gathering on the beach.

They are now currently inside his personal dimension where the sisters still do not notice that they are not in the real world.

Their clashes are everywhere and their wind creates vortexes in the sea and tornadoes on land.

Fortunately, there are no people here other than them.

Kurumi looks at the twin's location and Shido, thinking what is he thinking right now.

Shido didn't think anything and just watch their battle.

Kurumi forgot her main purpose and decided to get along with him.

Since he take her here it means that this must be what he wanted to let her see.

Their battle didn't take that long and the sky became clear again.

The Yamai sisters' names are Kaguya and Yuzuru.

Yamai was originally one Spirit, but for unknown reasons, she was split into two bodies and minds. 

The original personality of Yamai is now gone, as well as what type of character she used to have is unknown to the split Yamais'. 

The Yamai Sisters have been well known to the people who knew about the existence of Spirits because they often cause a major storm in an area, which occurs every time they come to Earth.

It was unstated when the Yamai Sisters started fighting, but they have been fighting with each other for quite some time for the sole purpose of deciding the winner as the real Yamai. 

Their matches range from non-violent to violent for almost 99 battles, with them arriving at 25 wins for each sister and 49 draws. 

They then decided that the 100th battle would be their final confrontation. 

Whether out of luck or by chance, their last battle would be—

Beneath them, they finally notice Kurumi and Shido, watching them.

"Human and another spirit?"

"Yeah."

"I cannot simply ignore them. What should I do?"

Kaguya thought of something she can describe as a brilliant idea.

"I have a brilliant plan, Yuzuru."

"Question: What is it, Kaguya?"

"We have fought numerous times thus far, resulting in 25 victories, 25 losses, and 49 draws… and we were beginning to run out of ways to duel. However, there is one aspect on which we have yet to decide who is superior."

"Question: Which is?"

"Beauty."