(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!"

[Starry Sky Railway] [Funny and entertaining] [Multiple female leads] [No system but invincible]

Xu Zixuan travels through the Collapsed Iron City.

Bad news: I've only just transmigrated here, and I've already attracted the attention of a robot-headed guy, a peeping tom, and a fun-loving guy.

Machine Head (Bo Shi Zun): A being from outer space, possibly from a world beyond the Tree of Imaginary Numbers.

Voyeur (Fu Li): Unable to see the other person's memories, secretly hides away.

Laughing Person (Aha): Aha, this is really fun, let's go.

Good news, Ahabah has made a move.

Xu Zixuan crashed directly in front of Kafka and Silver Wolf, who were doing bad things at the Black Tower Space Station.

Kafka: (Word of Power) Listen to me...

Xu Zixuan: Mom! I'll do whatever you say?

Kafka: ?

Silver Wolf: The vessel is ready, you decide!

...

[Invincible from the start + Pure invincibility + Infinite number of heroines + Half-fun] Meng Feng transmigrates to the Starry Sky Railway, where he's immediately given a cheat code by the system. Just as he's about to unleash his power, he discovers that countless years are still ahead of the main storyline. After a long wait, while making up for his regrets, he embarks on a journey to find fun. First, he creates a 'simulation' of Minecraft, which not only allows him to bring items into reality, but also features many mods that Black Tower finds fascinating and wants to study, repeatedly asking Meng Feng to test them. Bronya and Seele even team up to use resources from the game to restore Ariello-VI. Black Tower: "Can 2x2 or 1x3 really make water inexhaustible?" Bronya & Seele: "Great! With things from Minecraft, Ariello will definitely regain its former glory!" Star: "Let me see what good stuff the trash cans in the game have!" March 7th: "Bro, can you make us five-star? Our two forms are only four-star! The Dragon King has returned from Danheng next door!" Mengfeng: It's just that it wasn't turned off, and you're saying I turned it on? ...

Note: Mei appears in Chapter 38 of Volume 2, and the Mars part begins in Chapter 274 of Volume 5. The early stage is slow and there are many female protagonists.

After completing the Honkai Impact 3rd 2.0 Mars plot, which he (thought he had) played for half a year, Li Qiong was broken by Prometheus's words "Welcome to the Moon". Just as he was scolding Mihoyo for being inhuman, he turned into the Honkai Impact 3rd male star He Jingqiong and traveled to Changkong City before the whole story began.

However, for some reason, he not only obtained the power of the star core, but also possessed the power of Luo Xing's "Awakening". He had planned to rely on good relations with the three major families to enter Saint Freya and lie low until the end of the Great Collapse to enter the Destiny and live under Theresa. However, unexpected people appeared one after another:

Baiji: "Qiong, long time no see, how are you doing lately?"

Selim: "Kyouko, it's wrong for a pet to run around~"

Serapeimu: "Brother Qiong, Sister Songque and the others miss you very much..."

Looking at Songque who was crying and rushing towards him for a hug, and then looking at Mei and others who were showing a sick smile and holding a kitchen knife behind him, Qiong said that he really knew nothing!

Why did the Pope of the Spirit Hall become a pillow, and be hugged to sleep every night?

Why did Ah Yin's memory get modified, and she personally destroyed the Blue Silver Emperor bloodline of the evil son Tang San.

Xiao Wu was actually forcibly taken in as a pet rabbit and forced to live on carrots.

Zhu Zhuqing succumbed to catnip, but her cold face shyly called her master.

Poseidon was also forcibly abducted, and finally took off the head of his lover Tang Chen with his own hands.

Is this a moral decline or...

Shang An: Yes, I did all this.

In order to become an immortal, for immortality, Shang An can only suffer for his third brother.

I am Shang An, the hammer of Tang San, the master of Haogan.

Traveling through the prehistoric world, Li Changsheng became a congenital willow tree and accidentally joined the chat group of all realms.

At the same time, he opened up his comprehension to go against the sky.

[You comprehended the martial arts technique "Heavenly Demon Strategy" and understood the realm of martial arts. Martial arts is the key to unlocking the secrets of the human body. A strong body means a strong foundation. You created the magic god body refining technique. ]

[You comprehended the origin of the world and understood the way of the world. One flower is one world, one year is one withering and flourishing. You turned your willow leaf into the world and created three thousand divine realms]

[You obtained the origin of three thousand worlds and created a method of cross-border ascension. You comprehended the way of the primordial universe...]

...

Li Changsheng transformed and wanted to roam the prehistoric world and take in the beauty of the heavens and all realms.

However, the appearance of a little loli made him start his daily life of taking care of the baby.

Tangtang: "Daddy, let's move. I recently visited the Thirty-Three Heavens and found a good place..."

Li Changsheng: "Tell me, whose cave do you want to occupy this time?"

Tangtang: "..."

The group members also underwent subtle changes due to Li Changsheng's joining.

Ma Xiaoling: "Just subdued the general, the Nine Secrets are really powerful, and the Zhuxian Sword is not bad either."

Qian Renxue: "Tang San has been captured, welcome the arrival of the little princess!"

Medusa: "Please help me practice, Brother Li!"

Li Hanyi: "..."

(Originally also known as Honkai Impact 3rd: My Perfect Life Simulation System)

Alicia: "Oh, Xiaochen, you are so cute. This pink skirt must suit you very well! Oh, don't run~"

Mei Lei: "Su Chen, I am willing to fall into darkness in exchange for you returning to the light, just like you once saved me."

Xilin: "Brother, you said you would stay with me forever. This time I won't let you leave my side again."

Lin Zhaoyu: "Big Brother, do you remember that you still owe me a promise? I am willing to spend my life with you."

The Herrster of Knowledge: "Traitor, come and take my sword!"

On the day of my car accident, something strange popped into my head!!! Yukinoshita Yukino: Hikigaya-san, stop what you're doing or I'll call the police. Yuigahama Yui: Hikigaya, you're actually doing this to me!!! Kato Megumi: Hachiman-kun, this isn't okay~ Kasumigaoka Utaha: Junior, you can't do that. Sawamura Spencer Eriri: I treat you like a geek, and you're trying to do all this to me... Aoyama Nanami: Impure relationships with the opposite sex, no! Shiina Mashiro: Hachiman, you're my first... Hikigaya Hachiman: It's all the system's fault!!!

The final battle of the pre-era pitted eight Fusion Warriors against the Herrscher of the End. In the end, Kevin was the only one left standing, single-handedly delivering damage. Through my memory resonance, I saw Kevin slumped in a chair, weeping uncontrollably. This image will never be forgotten.

At that moment, I thought, if I could become a warrior against the Honkai, I would win. Now that the end is upon us, I must consider whether this is my only chance.

I believe Kevin has contributed greatly to the Fire Greatsword's return to its former supremacy. It's our duty to restore the Fire Greatsword's glory!

Kiana: But Xiaobai, you used a sword after entering the virtual space!

Bai Mo: Shut up! A four-foot-three-inch long sword can't be considered a Fire Greatsword? Look at the Divine Fire Trial and the Divine Falling Sword. Which one looks like a greatsword?!

The Fire Greatsword is supreme! With this blazing fire, I can slash through everything!

In short, this is the world of Honkai Impact 3rd, shattered by a time traveler known for "incredibly beautiful looks, unbelievably powerful strength, a stoic personality, and a gorgeous configuration."

Wings are not tangled, and the guardians of morality go around.

PS: Although the protagonist thinks he has taken over someone else's body, in fact, it is still his own body.

Having transmigrated into the body of Sawamura Sayuri, she initially intended to raise her daughter into a flawless young lady. However, one day, she discovered a mother-daughter erotic comic book in her daughter's room. Also, why is the gaze of her once cute and obedient junior light novel author, Kasumi Utako, becoming increasingly strange? Shizuka! Aren't we university classmates? Why are you making a move on your senior?! No way, I, Sawamura Sayuri, will never be so easily conquered!