The world is submerged by the sea, and Luo Zhen is the last human. This is the base, this is the system. Explore the truth of the apocalypse, summon girls to develop and grow stronger, and when resources run out, travel to other worlds. Enterprise: The Commander doesn't let you get under the covers, are you going to or not? You're going to get under the covers even if you die. Frederick the Great: I just came to check if the Commander is properly covered up. Prinz Eugen: Commander, when you see me at night, just say goodnight, not... Luo Zhen: What are you doing here? How did you get in? A group of ship girls couldn't contain themselves and burst through the door, a great battle was inevitable. Luo Zhen: Ship girls are strong, but building a base requires various talents, are there any other roles? System: Yes, bro, yes. Bulma, Android 18, Tsunade... you name it!

In a Honkai reactor laboratory at Schicksal headquarters, Himeko Murata faced an unprecedented predicament, with two S-rank Valkyries blocking her path. Just as she was in despair, Himeko's intense desire to save her students resonated with an unknown entity. 【Hello? Are you in trouble? Do you need a hero to save you?】 "What...is this?" 【If needed, please place an order with Dimensional Odd Jobs Shop. Our shopkeeper can do anything!】 "Please help save Kiana! Please! I'm willing to pay any price!!" 【Request received】【Request details: Save Kiana】【Reward: Everything Himeko Murata】【Awaiting shopkeeper's acceptance, please wait a moment】... Soon after, a beam of light pierced through between Himeko and Rita, and a man wielding a holy sword appeared before her. "So, are you my client?" (The main world of the anime crossover includes classic slice-of-life anime such as Saekano, Oregairu, Eromanga ga Sushi, and Oreimo; the supernatural forces include Touhou Project, Strike the Blood, Nurarihyon no Mago, and High School DxD; the side worlds are tentatively set to Honkai Impact 3rd and One-Punch Man, and will be added later.)

He starts out finding himself a regular member of the Sky Ring Clan? And, to make matters worse, the robin's cousin without blood ties.

This is such a perfect start! As a transmigrator, of course I have a system, but what's with this damn system just abandoning a library from a time when humanity was shining like stars and running away?

(I'm too lazy to think about anything else, let's just read the main text (XP))

(Female lead) + (Immortal, Nothingness)

Chu Feng arrived in the Collapse Iron Universe by accident. Here, he was an egg, adopted by the natives of a planet, and lived a comfortable life until he hatched.

But the arrival of a Great Lord of Annihilation destroyed everything he possessed; the power of a casual strike could pierce through the stars.

Until, decades later, a giant dragon looked at the giant before it.

"Nanook, I've brought you destruction!"

One day, an unlucky guy who was transported away by a massive transport finds himself in the world of the Starry Sky Railway and has become the Sky, but after regaining consciousness, he discovers that things are not so simple...

Buhou kids! I'm not human anymore!

Wait, what's with the evil spirits?!

A country boy, full of dreams, stepped into the labyrinthine city of Orario, only to be quickly slapped in the face by reality. The city didn't welcome him with adventure and battle; Koya, without a familiar to take him in, was forced to work as a laborer for the Loki Familia. "So this is the hero I'm going to raise?" [Yes, Himeko-san.] "What are you for?" [I can do anything you want, and even things you dare not imagine. So spend money, Doctor!] "Mora? You only need Mora?" [Mora is all you need; this is our contract, Ningguang-san.]

[Slice of life][Multiple female protagonists][The protagonist will become a guardian of the guardian][No system but a Heroic Spirit][The skills and Noble Phantasms reflected in the legends from Earth are equally applicable in Honkai Impact 3rd][There may be a future collaboration with Hanabi in Honkai Impact 3rd]

In another timeline, Earth is invaded by alien life. A child chosen by Alaya, an ordinary person, gains the light of a heroic spirit and saves the world. After the timeline restarts, he lives a peaceful and ideal life. However, in the real world, Gaia awakens him again, and he enters the Honkai Impact 3rd world for further study to help Earth escape the prison of observation. The main storyline focuses on daily life in the Honkai Impact 3rd world, with minor climaxes occurring in the Immortal Ship Luofu.

March 7th: Li Xin, you're too amazing!

Xing: Coach, I really want to learn this! I'm willing to do anything!

Danheng: No matter what difficulties your hometown encounters, I will help you, because we will be working together as a train crew for a lifetime.

If the synopsis is insufficient, please proceed to the main text. As a novice author, I hope to write some stories that bring joy to readers.

This is a fusion of comics that seeks to redeem various tragedies. We've already seen the basic apocalypse, Black Bullet, Girls Frontline, Ashes of War, the Fourth Holy Grail War, Sword Sanctuary, So I Got Reincarnated as a Spider, and Aria the Scarlet Ammo. We've basically recovered all the swords, and we'll strive to ensure that all characters have a happy ending. 416: Commander, just having me is enough for you! (Heart eyes) His Highness Dingyuan: For the rest of my life, this sword will only be wielded by you! TMP: You didn't touch my tail today (shows a hatchet) -- Agent: Master, your taste is truly [Yu Ming Yin Shang]

Ye Tianyu, a 'poor man' who accidentally became a time traveler

He traveled to the Starry Sky Railway in a daze, but became a powerful but short-lived Grammer Iron Cavalry.

Ye Tianyu: Is that even necessary?! Do you even need to tell me I'm going to die young?! Agreement passed! Scorched Earth campaign implemented! I'll just burn you to ashes! I'm going to tell you what it means to break the shackles of fate!

Someone: Help! Sarilang! Sarilang!

Sailang: Strange...Who called me?

[Semi-invincible, single female lead (impossible), contains OOC elements, please do not be offended if you dislike it.]

Su Tianling transmigrated to a world in chaos. After experiencing two endings, one from the previous civilization and the other from the current civilization, he thought he was finally free. However, the system made him transmigrate again.

"I can accept being transported to another world, but why am I sharing a body with this white furry ball?!"

"Su Tianling, I'm counting on you. Please help me with the other me."

"Yes, yes, okay, I'm coming right now."

"Tianling, can I really go back to everyone now?"

"Trust me, you can definitely do it."

"Thank you, Tianling. You're so good to me, always there for me."

"Tianling, you haven't fallen for me, have you?!"

"Su Tianling, you lied to me... You clearly said that you would always be with me."

There might be knives, but probably not many; there's more sweetness than anything else.