I created a dimension that can support incorporeal beings, then I summoned the soul of Yuuki.
She looked around confused until her eyes landed on me. Her eyes widened
"Wah!!!Onee-sama!! You died too!!!
She tackled me in a hug and cried " Wah!! Onee-sama! How can you die so young!!!*hic*, I'm sorry, I am not strong enough to protect you *hic*"
She's such a sweetie, I really want her to be with me but she will lose the 'spark' in the future. The difference between humans and divine beings is, that humans view immortality as a curse due to their limited thinking and many other factors that make them unable to 'live' a long life. Especially, Yuki, I saw multiple futures of her with her spirit broken due to her longevity.
I gently patted Yuki's head as she laid her head on my bosom.
"Yuki, I'm not dead"
"Hmm, okay. Then, why am I with you Onee-sama, wait, did that old hag assassin use her seance-cursed technique to summon my soul??!"
"No, Yuki. I summoned your soul here to this dimension. I'm a Goddess, when I saw your death, I couldn't bear it so, I'm here for you, I want to give you a chance. I know this is a lot to take in but this is the truth"
I can see her get shocked at the truth, honestly, if something like that happened to me, I would definitely reach the same. I don't mind if she hated me now because, in a way, I deceived her. Even I would never forgive my parents if one day they suddenly came out and told me they are some godly beings when they raised me normally the entire time.
In fact, I will torture them for eternity if they pulled that sh*t on me.
To my surprise, Yuki hugged me even more hardly "Thank you, Onee-sama...for being there for me, you are my everything. So, Knowing you are alive and well is enough for me, I don't need anything else"
I can see her feeling relieved and even happier than before.
"I see, in that case, I have a special gift for my lovely Imouto"
A blue light entered her soul replacing her cursed energy.
"Onee-sama, I suddenly feel....a lot stronger"
"I gave you my divine blessing, you can now use ice powers freely without any restrictions. Along with that, your soul and body are completely immune to possession and manipulation. Since my cute imouto wants to thank her Onee-sama, you can do it by living a full filing life once I reincarnate you "
"But....you won't be in it, isn't it..."
I can see her looking down in sadness, I kissed her forehead and held her close to me one last time.
"Yes, but I want you to live a fulfilling life without any regrets. You lived for me your entire life before, just live for yourself this once"
She turned into particles of blue light.
I created a new world, along with humans that have common to unique superpowers, nothing too world-shattering though, at most they'll have street-level potential.
Of course, they won't be anything too bad like human experimentation and such in that world. They will look for future progress, then I warped the time to the future of the world, where people have enough technology and developed the nature as well. I reincarnated Yuki as a child of an extremely rich and kind-hearted couple.
Only Yuuki is the strongest in this world. I gave her absolutely free will to do anything, she cannot be manipulated by fate and destiny, unlike others.
"Live a life without regrets, Yuki"
I warped into my 'special castle' in my pocket dimension and went to the treasury room. I made it so that the size of it is infinite.
Then, I created all sorts of divine treasures, demonic treasures, cursed treasures, holy treasures, unholy treasures, extremely well-done craftsmanship works, cosmic treasures, and even mundane treasures like jewels, gold, platinum, other precious elements etc are present. There will be an infinite number of each item here. I enchanted the treasury such that any treasure I throw in will be multiplied infinitely.
So, let's say I throw a dollar in it, I will be the richest person in existence since I will have an infinite number of dollars in my treasury.
"Yay! I have my own even more busted of Gates of Babylon now!!"
Then, I gave sentience to the 'special palace' where my treasury room is. This 'special palace' which I created after 'Hanging Garden of Babylon' is now soul bound to me, I can feel its absolute loyalty.
"From now on, I name you 'Aurea hortus'"
I saw 'fireworks' being launched into the sky showing me the happiness felt by the fortress.
"Good boy, now it's time.."
The preparations to humiliate him are complete.
....
In a huge city, that looks completely heavenly. This is a city in heaven of this multiverse. A grand palace can be seen in the topmost part of the city.
A man with Angel like wings can be seen sitting on a throne with looks of displeasure while he is surrounded by many women pleasing him. One of them is particularly close to him
"My lord, I'm sure you can defeat that plane walker in no time. You are after all the great heavenly God Yun Xun".
A woman who looks like the embodiment of jade beauty consoled the God while feeding him heavenly elixirs.
" You don't understand, Xun'er.... That plane walker is just a Mortal, granted an extremely she defeated the clone that has half my power but.... she is able to harm me who is present here"
While he is rambling suddenly, the whole heaven including The Angelic God 'Yun Xun' heard
"Gate Open"
The space cut opened above the heavens and a huge fiery star turned into a pink energy arrow as it entered a Divine bow
A Goddess in Red pointed the arrow at the city
"An Gal Tā Kigal Shē"
The 'arrow' is released into the heaven
A pesky shield made out of holy energy tried to protect the heaven however the 'arrow' shattered it like glass. The heaven got completely obliterated while the Goddess that caused such mass Destruction looked at it with excitement and joy
"My my~!!!! Such a beautiful sight of destruction! I was right to use that move. It sounds cool too. I have to give the credits to Ishtar. I loved her Noble phantasm the most after Karna's and Scatach's"
In that chaos and destruction, the heavenly God Yun Xun raised amidst the heat. He saw the dead body of his beloved wife Mu Xun'er and his harem. His anger soared and swore as he appeared in front of Akane with the divine sword of light in an instant as reality began to distort, he felt incredible power building up and ready to attack
"I swear to heavens, that I heavenly God Yun Xun will kill you and end your bloodline planewalker!!!!"
But....
Everything began to halt, even his own power and the reality distortion stopped mid-way as Akane blocked the divine sword with her nail and She began to laugh hysterically
"Lol, that's such a cliche xianxia line to say and dude, are you blind? I destroyed your whole multiverse including your so-called heavens, who the fuck are you swearing to"
At that moment, Heavenly God Yun xun felt a shiver run down his spine out of fear as he saw his world, not just heaven but the myriad mortal worlds connected to heaven getting crumbling into nothingness. He can hear the cries of the uncountable number of mortals and gods at the clutches of certain death, as his whole multiverse crumbled to dust in front of his own eyes.
Even he doesn't have that much power to destroy his own multiverse.
He felt a hand gently stroking his chin, he didn't dare to look up but when he did, he saw Akane giving him a sadistic bloodthirsty smile and she uttered
"Darling~, you just can't imagine how much pain I'm going to put you through for the rest of eternity"
{A.N : That's all folks. And yep, I just love weapons and magic from Fate franchise So, they will be used a lot. Even though I'm a huge Lancer class fan, I'm obsessed with Ishtar's noble phantasm.
Also, The concept of Authority is not the same as Fate's. It is completely different thing}