(Not a crossover anime/manga universe, but set in the Akatsuki/Akame ga Kill! universe) "Ichijo, I bestow upon you the Imperial Arm Murasame to commemorate your achievements." "No, too much killing intent, it will harm my health." "What about the Demon Possession?" "No, Lancer's luck is E, how many masters has this thing killed?" "Gaia Foundation?" "I don't want to be a cross-dresser!" "Then what do you want? Tell me, and I will grant it to you." "I want the Demon God Manifestation!" "But, this Imperial Arm is on Esdeath, if you want it, wouldn't you be taking Esdeath home with you?" "Your Majesty is wise, I thank Your Majesty for the marriage!"

[Adventures in the Roger Era] + [Gunslinger] + [Pure Devil Fruit Development] + [No System] + [Unchanged Power Levels]

Darrow travels to the world of One Piece and becomes the younger brother of Roger's wife Rouge. Fortunately, Roger has not yet conquered the Grand Line, so Darrow still has time to change his sister's tragic future.

With the power of the Compression Fruit and his innate Observation Haki, Dead Eye, Darrow grew step by step and made a name for himself on the high seas, writing his own legend in an era where heroes like Roger, Rocks, and Whitebeard rose to prominence.

The story begins with the crew's adventures (partially original storyline + extensive references to the old era in the manga), and after Roger's death, they become one of the Four Emperors and vie for supremacy.

[The strongest gunslinger] + [The most imaginative fruit development]

Cheng Feng transmigrated into the world of Fairy Tail. In this world where everyone's combat power is off the charts, Cheng Feng is a little panicked. Fortunately, he possesses the ability to receive magic and also carries a gacha system. With enough money, he can draw cards, and the cards he draws can be used using the receiving magic. This is getting interesting. Paying to get stronger—as long as the money's right, even the Black Dragon will be utterly defeated!

Illya: "Yu, you went to another world to gain the power to save me, right?" Emiya Yu: "That's right." Chloe & Miyu: "Then what's with all these girls sitting on the sofa?" Upon hearing this, Emiya Yu looked at the Burst Mage, the Blue Ribbon Goddess, the Gluttonous Sisters, and the Elf Family sitting on the sofa, and said naturally: "Oh~ my dear Illya, Miyu, and Chloe (Kuro), saving the world and chasing girls don't conflict, do they?"

One cross-dressing cosplay session resulted in a complete transformation.

Upon arriving in the world of Naruto, I originally intended to open a small restaurant and wait for the protagonists to save the world.

But now that I have a cheat code, I'll make this ninja world the way I want it to be.

Even the Sage of Six Paths couldn't help me, I'm telling you!

Xu Yong traveled to a world captivated by gourmet food, and successfully became a regenerationist. As a traveler, Xu Yong also awakened a cheat code. Through the novice gift pack, Xu Yong gained gourmet cells and copied the unconscious leader slime, who was completely under his control, as his own gourmet devil. However, the system fell silent after dropping a novice gift pack. Just as Xu Yong was struggling to activate the system, he picked up a girl named Nakiri Erina who should not have appeared in this world. From then on, he was unstoppable...

[Kanba + Game + Relaxation + Funny + Interstellar Technology + Multiple Female Characters]

Why is the spatial barrier full of holes? Who are the nine factions trying to protect against by sealing off the warehouse?

Is all this the distortion of the Siren, or the downfall of the commander!

I am Jiang Jiang. I stepped on the accelerator and the spaceship crashed. Looking back, I wondered what happened to me?

Iron-barbed termites digging holes everywhere in the experimental field, and beautiful girls wearing ship uniforms, is this Azur Lane?

"Okay, okay, Siren, if you stepped on me today, you'd be stepping on a Jianjingtai landmine!"

The heat vibration saw sword sounded, releasing the condensed atomic beam, pulling open the ion ejection force field bow, and the flying destroyer soared into the sky.

The interstellar captain who traveled back to the time before liberation overnight, took out the blueprint of black technology, and was bound to teach the Sirens what dimensionality reduction strike meant!

"The Father of All Ships grants you strength, dimensional ascension, interpenetration tactics... Wait, rebellious girl! What are you going to do?!"

"Get on board!"

(Steady development in the early stage, disaster in the later stage, semi-invincible)

Transmigrating into the body of a pirate, Wang Chen becomes an apprentice on Whitebeard's ship. The New World is teeming with powerful figures, but he's fearless; he possesses a "jar system." He extracts Conqueror's Haki from Whitebeard. He extracts the Rumble-Rumble Fruit from Aokiji. He extracts the legendary sword, the Second Generation Kitetsu, from Marco. ...Aokiji: It's not a matter of strength; he's a very...special apprentice. Marco: An apprentice? Of course he's Whitebeard's apprentice, except he can easily defeat an Admiral! Shanks: An apprentice? An apprentice who can make me flee in terror, don't I, Shanks, have any dignity? Blackbeard: You...you stay away!! ...As an apprentice, he becomes the king of the New World, starting with slapping Shanks and chasing Blackbeard!

Lin Yu transmigrated to the world of Demon Slayer. Awakening the Character Inheritance System, he immediately inherited the legacy of the blind swordsman, Fujitora Issho. Thus, a swordsman of unparalleled skill and mastery was born… “This swordsmanship!” “Is this really a sword that a human could wield?!” Kibutsuji Muzan collapsed to the ground, his face filled with unprecedented terror. Kibutsuji Muzan once again experienced the terror of being dominated by that figure four hundred years ago, even more terrifying than before. “This oppressive feeling…” “Perhaps, compared to us, you are the monster.” Upper Moon One, Kokushibo, stared intently at the man standing before him. Having experienced the terror of that man four hundred years ago, Kokushibo could better understand the terror of the man before him.

"Synopsis: Change Hundred! This book is also known as: The Leisurely Life of a Max-Level Maid, I Drive a Gundam in Genshin Impact, and I Put All My Points in Defense Because I'm Too Afraid of Pain." "Jean, we in Liyue want your maid. Name your price," Ningguang said in a firm tone, staring into her eyes. "Sorry, not for sale." Captain Jean took out her Wind Eagle Sword and gently polished it. Behind Ningguang, Keqing frowned and decisively took out her Sky Blade. Lisa, not to be outdone, opened the Four Winds Codex. Thus, the first "war" between Liyue and Mondstadt erupted, known in history as the "Noel Rose War."