The abyss descended, and the extraordinary beings wreaked havoc, but Qin Shan snatched the script. "Whether the world is in chaos or not, I, Qin Shan, have the final say." Reborn with a ship girl, Qin Shan raised his middle finger to the abyss.

In the endless world, a strange legend circulates: in a special little shop, by signing a contract with the shopkeeper, one can obtain everything they desire—powerful strength, countless riches, and knowledge from another world! But few know that this shop also possesses the power to change destiny, whether past, present, or future, or regardless of race or identity. When they are willing to gamble everything to change their fate, the door to this shop will open for them, and a new destiny will be born here! "Sign a contract with me, and then—transcend destiny!!" — Meanwhile, the shopkeeper, Lan Xing, is looking helplessly at his ever-growing deficit in his account book. He doesn't know when it started, but the number of girls in the shop seems to be increasing: twin oni maids, an elf girl who loves dolls, a cat-eared blade that transforms into a sword… 'The meal expenses have gone up again this month.' He only initially wanted to reciprocate a gentleman's kindness… (Also known as the Dimensional Aid Exchange, Dimensional Oddity Store, Dimensional Exchange…)

(Daily article, many female protagonists, telling a little story, please take a detour if you mind)

…

Don't open the hanger too wide, as it will easily pull your hips.

Take exams, write books, cook, go on dates...

The so-called little happiness in life is just like this.

This is an everyday article mixed with some magical realism.

[Global Cataclysm + God-Tier Mobile City + All Heroic Spirits Summoned]

A void rift erupts, and the apocalypse arrives!

Chen Xuan awakens the [Nine Heavens Mystic Pivot Fortress] at the start, directly binding himself to the top-tier heroic spirit of the Monkey King!

This city can not only fly, fight, and level up, but it is also the ultimate core connecting mythical heroes from all over the world!

North American mech legions? I'll blast them through with one shot!

Japanese Ninjutsu Secrets? My Female Ninja Bodyguard!

European Templar Knights? My Knight King is both handsome and powerful!

The shadows summon the Mother of the Void? Behind me stands the entire history of Eastern and Western mythology!

Watch as Chen Xuan, commanding the Divine Fortress, leads numerous companions and heroic spirits to sweep across global rifts and uncover the ultimate truth of the apocalypse!

Keywords: post-apocalyptic science fiction, Eastern and Western mythology, mobile base, hero summoning, multiple female protagonists, global adventure, power struggle

My name is Ammons, and I'm a villain. I can modify common sense and exchange various villainous abilities through the Demon King System to create my own Demon King powers. Reincarnated from ancient times into a useless prince, this holy mage protagonist's magic is unmatched, but your fiancée is too shy~ Your master is very charming~ And there's the genius prodigy from the Duke's family, born invincible, and your sword saint maid is very alluring! What, you're actually a little loli? Well, I'll take you all! Those reincarnated old men, overpowered protagonists, heroes, etc., with me, Ammons, you'll all suffer!