(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!"

[System Flow] [Immortal Slaughtering Sword Formation] [Twin Martial Souls]

After transmigrating to the Douluo Continent, Su Yu awakened a heaven-defying Zhuxian Sword Formation Martial Soul!

With such an extraordinary martial soul, it's only natural that he's invincible!

However, Su Yu also awakened his own system, and the style of the story began to change:

Xiao Wu: "Brother Su Yu, Xiao Wu likes you so much. Tang San? Who is Tang San?"

Zhu Zhuqing: "Brother Su Yu is the most powerful man in the world!"

Ning Rongrong: "What giant sausage? It's nothing compared to Brother Su Yu's Immortal Execution Sword!"

Qian Renxue: "You scoundrel Su Yu, you started this the first time we met..."

Fatti, transmigrated to the world of DanMachi, starts with a fully-equipped arsenal of three magic spells and seven skills. Unfortunately, his potential is extremely limited, preventing him from seeing further. It's only after accidentally discovering a hidden treasure chest function that his life takes a dramatic turn. He opens invitations to recruit familiars from other worlds, acquiring various magic books and transforming himself from a mage into a noble sorcerer. With the goddess Demeter as his backer, he secretly accumulates strength, manages his familiar, and quietly develops his power. From then on, he cautiously and steadily begins his fantastical life in this other world.

(Yandere)

Su Cheng was originally just an ordinary high school student. After we were all living our lives to the fullest during the Universiade, he transmigrated into the body of an adorable male succubus.

At first, he thought he was very lucky, until he was taken good care of by the "motherly" leader of the ensemble. Then he realized that this was a world that would plunge him into an abyss.

[Various anime/manga crossovers, multiple female characters, Tokyo Ghoul, Detective Conan, High School DxD, Heaven's Lost Property, Jackie Chan Adventures, etc.]

Asagi, Akane, Himawari, Idol Girlfriend?

Regarding the issue of the unconventional world he transmigrated to, Hinata Gen said he didn't care at all. This was a paradise, where all the action and passion could go to hell; it was all about slow-burning daily life and collecting girls.

[Game-Fused Reality + Universal Access + Rebirth + Multiple Heroines] Jiang Chen, newly reborn, opens his eyes to find a village bully harassing his sister-in-law. Jiang Chen beats up the bully, rescues his sister-in-law, and then, using his memories from his previous life, helps her improve her strength in a game called "God's Domain"... By the time the game and reality merge, Jiang Chen has already become a peerless master. Holding a sister in his arms, his combat power doubles! Holding a sister in his arms, corpses litter the ground!

[Transformation] Takuya wakes up to find himself in another world, Japan, transformed into the white-haired girl, Tower Diana. His determination to overcome difficulties allows him to quickly adapt to this change. Then, on a bright and sunny afternoon, in an effort to apply the idealistic Japanese youth lifestyle gleaned from manga, he confesses his feelings to the school's unattainable beauty, Yukino Yukinoshita, but is rejected… What will become of the disheartened white-haired girl…? Seeing the white-haired girl gradually surrounded by others, an anonymous Yukino thinks: I'm starting to regret it.

[High-level martial arts + absolute invincibility + decisive killing + exhilarating]

Alien beasts have invaded Earth. Humanity is on the brink of destruction, and the entire population awakens: young girls nurture spirit swords, becoming spirit sword wielders; men forge contracts with spirit swords, becoming sword bearers. Only by uniting the two can they fight against the beasts!

Su Bai, a transmigrator, was childhood sweethearts with Gu Xuefu, the Spirit Sword Master. For twenty years, he poured his heart and soul into transforming Gu Xuefu's E-grade discarded sword into an unparalleled SSS-grade spirit sword! But at the height of his success, he was betrayed and discarded!

Cyberbullying, public condemnation, contract termination... Su Bai became a pariah. Everyone believed he was nothing more than a vampire clinging to an SSS-level spirit sword, and that without Gu Xuefu, he would be utterly useless.

However, they didn't know that Su Bai was the true mastermind behind everything! He simply reserved all the limelight for Gu Xuefu. Now, freed from its constraints, the system, twenty years overdue, has finally awakened! Sign in daily to receive a mysterious gift pack!

From then on, Su Bai made rapid progress! He slew the Abyss Demon Dragon and obtained the Dragon Clan's supreme treasure; he defeated the Nine Nether Ghost King and obtained the Netherworld's inheritance; he slaughtered the Starry Sky Beast and obtained the power of the Star Core... Various beast kings howled in agony under his hands, turning into generous rewards!

The once arrogant Gu Xuefu is now filled with regret and begs for reconciliation? Su Bai sneers: "Get lost!"

The aloof and icy school beauty sheds her cold facade before him; glamorous and mature women fight tooth and nail over him; an adorable little girl clings to his leg, begging for nothing...

Countless SSS-level spirit sword users are captivated by him, only wishing to sign a contract with him and reach the pinnacle together!

"I once created a legend, and now I will surpass it!" Su Bai stood proudly in the sky, looking down upon all living beings.

[The Heavenly Physician Descends from the Mountain, Specializing in Curing Those Who Disobey]

Lin Fang, possessing unparalleled medical skills, descends the mountain to enter the world. A quack doctor who bullies others? He'll smash him with one punch! An arrogant rich kid? He'll crush him with one stomp! He heals the sick and saves lives, and he also silences all those who dare to defy him!

[Specialist in rescuing goddesses, surrounded by beauties]

Aloof CEO, gentle school beauty, dashing policewoman... goddesses from all walks of life are seeking help.

Lin Fang's miraculous healing skills also brought them back to life.

In this city, he possesses unparalleled medical skills in one hand and stunning beauties in the other, living the most carefree life!