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…)

Huangfu Longdou, capable of traversing countless worlds, relies on a side-effect transfer system to continuously travel and level up. He experiences various worlds: the technological muscle-building abilities of the Kengan world, the spider-like powers causing the death of loved ones, the Green Goblin serum's second personality, the technological serums of Shaolin Soccer, the internal energy conflicts of the Star Absorbing Technique, the internal organ damage of the Seven Injury Fist, the disfigurement and poisoning of the Thousand Spider Poison Hand, the Star Absorbing and body explosion of the Amazing Couple, the Shennong Sect's poisons of The Great Laughing Jianghu, the Crimson Fire Divine Skill of the Storm Riders world, the Lizard Serum of The Amazing Spider-Man, the Devil Fruits of the One Piece world, the God Genes of the Corpse Brother world, the Pure Dharma of Mount Shu, the Fenji Sword with its malevolent energy, the monster cells of the One-Punch Man world, and the Iron Man world...

Travel through Demon Slayer and merge with Muzan Kibutsuji!

Reorganize the Twelve Demon Moons, run rampant in Tokyo Prefecture, and terrorize Japan!

End the Demon Slayer Corps, liquidate Ubuyashiki, and aim at Taisho Tenkō!

Strategy of thousands of ghosts, swallowing the world, only I am Yue Yan!

In the prototype world, he fused with the black light virus, absorbed and evolved! In the dragon world, he comprehended the ultimate word spirit and killed the White King with a sword! In the Devouring Star, he roamed the universe of all races and trampled on the old gods! He crushed the Infinity Stones in the Avengers, he controlled the Angel Nebula in The Heroes, and he shocked the forbidden area in Covering the Sky... He invited the Flame Emperor to travel across the world and discuss time with the Red Lotus Demon Lord... Calmness and decisiveness are his synonyms. Lu Chuan rose invincibility, relying on the black light to devour and absorb in the heavens and become the final evolution. ... "Compassion is my best weapon." As he said, Lu Chuan swung his sword. He said indifferently: "I will help you escape from the sea of ​​suffering!"

Bai Liang woke up from a sea of blood and corpses, realizing he'd just started from hell. Luckily, his cheat code was activated, allowing him to join a chat group for all realms. He was all in the group, sharing talents, skills, and abilities!

Just as Bai Liang was feeling relieved, he realized something was amiss with his other selves...?

[The Smiling Proud Wanderer] Bai Liang: Come and shake me, use all your world-famous skills!

[A-Human] Bai Liang: Kill! Kill! Kill! I want to see rivers of blood!

[X-Men] Bai Liang: Come on, go all out! Don't give me the chance to kill you all!

[DC] Bai Liang: I'm the son of Zod, the real Superman!

[Marvel] Bai Liang: I can single-handedly slaughter the entire fucking Marvel Universe!

[Sea Tiger] Bai Liang: Everyone, I can sense your ambitions, I understand your motives! ...

Bai Liang: "Alright! Let's go to war, the right kind of war!"

[One Piece Fanfiction] + [Invincible Male Protagonist] + [Decisive and Ruthless]

Starting in God Valley, facing a three-way battle between the Navy, Roger, and Rocks, Lynn, a slave, makes a fourth choice—to devour the era!

Having obtained the power of the Mythical Ancestral Dragon, he not only didn't run away, but instead kidnapped the sea overlord, Rocks!

Thus began an unprecedented path to hegemony.

He doesn't want to be the Pirate King because the entire ocean will be his territory; he doesn't want to be a revolutionary because he wants to establish an order even more absolute than that of the Celestial Dragons!

"Im, get off that throne! From this day forward, I, Lynn D. Caesar, am the one and only king of this world!"

In the world of dragons, he is the mixed-blood king Xi Huang who established a new order between humans and dragons;

In the alien world, he is the chairman of the Mutual Aid Committee of the Eight Great Skills Successors, and a legendary alien who can wipe out the enemy within ten steps;

In the world of Zhu Xian, he is the Supreme Lord who re-establishes the Heavenly Court, promotes the revival of spiritual energy, and restores the heyday of cultivation;

In the world of Dafeng, he is a peerless martial saint who has taken a unique approach, proved his truth with force, and pushed open the door to the way of heaven;

In the world of Shrouding Heaven, he is the peerless Heavenly Emperor who achieved immortality in one lifetime and paved the way to becoming an immortal in ten lifetimes;

…

Dragon Clan, One Person, The Bad Guys, Covering the Sky, Dafeng, Ever Night, Fighting Through the Dark World, Black Myth, Tian Xing, The Legend of Wu Geng, Jade Immortal...

I will protect the strength of the domestically produced area!

Su Yun, who traveled to the world of Under One Person, discovered that he refreshed a rule-based ability every day. After he could enjoy his life, he lay down.

I never thought that I would be pulled into the chat group of all heavens.

"Hiss~ Ghost Eye Detective, Zhuge Liang... Saber is kind, yo~ The Judge of Samsara Paradise, Ainz?! No wonder these guys are just sitting there watching the show!"

After realizing the identities of these high-quality chat group members, Su Yun observed a three-second silence for the group owner, and then his fun-loving nature was aroused.

Departure for the first battle: Participate in the Samsara Paradise, the second-level derivative world, and the Fourth Holy Grail War.

After traveling to the world of the Bone King, Rowan possesses a player profile and his first class is the rare Healer. Five years remain before the story begins. To survive, to avoid becoming a two-legged sheep, Rowan is forced to take on the Great Tomb. Optimization! Degradation! Ha, are you trying to push the limits of humanity?