The protagonist has a weak presence (he disappears later on), and the main and secondary plots are connected to the author's previous book, so it doesn't matter if you haven't read it.

Timeline: Collapse: The time is before the 2.0 main line and after the 1.6 main line

Collapse 3: In the third collapse, the three families were taken to Hyperion and returned to St. Freya Academy

[No CP + Cool Story + Strong Female Character + Zombies + Animal and Plant Mutations + Time Travel + Rebirth + Group Portraits + Cold and Poisonous Mouth + Mysophobic Princess Syndrome]

Traveling through the apocalypse, others are hoarding supplies, but Lan Xi, as a zombie, is coolly hoarding duck blood.

Heaven arranged an identity for her, making her the younger sister of the male protagonist's good brother.

My brother’s fire ability allows him to make spicy grilled duck blood, it’s delicious!

The heroine with dual superpowers of space and healing is equivalent to a large-capacity duck blood storage box.

The male protagonist with the dual superpowers of wind and thunder, who has always been despised, finally found his magical use one day.

The wind ability can cut the duck blood into thin slices, and the lightning ability can electrocute the ingredients to make them more flavorful.

Lan Xi discovered that as long as she enslaved the male and female protagonists, she could live a good life without worries about food and drink even in the end times.

…

The heroine of the novel, Su Ling, experienced all the sufferings of the end of the world in her previous life. Now that she has the chance to live again, she decides to cling to the "thigh" of the most powerful person in the end of the world!

But she suddenly discovered that Pei Jingxiu, the most powerful psychic in her previous life, was at most a handyman in front of that noble, cold, and powerful young lady!

In this case, of course she has to change the 'thigh' to hug!

When he learned that his healing powers could end the apocalypse.

Su Ling: "If sacrificing myself can save more people, what should I choose?"

Lan Xi: "That means you are more important than them all, so they all deserve to die."

Su Ling: (#^.^#) I suddenly feel cheerful again~

…

Looking back on his life, Pei Jingxiu felt that the best thing he had done was to cling to the right person.

After all, being a "thigh" is so tiring~

Follow the boss and he will win without any effort!

What should you do if your home planet is invaded by alien beasts from deep-sea wormholes? Is

this even a question in a sci-fi world?

You must kill them back to enslave their worm mothers and occupy their planets!

What? The mecha's combat power is not enough?

Evolve into giant mechas immediately!

Still not enough?

Evolve the mecha into an interstellar battleship formation!

The home planet is under siege?

Evolve the battleship into a war star to protect the home planet!

What? Can't withstand the attack of high-dimensional creatures?

Then evolve into a super home planet! The Ten Thousand Dimension Star Cannon, penetrate this universe!

All fears come from the lack of confidence in firepower.

All truths only exist within the range of firepower.

With the rise of the human race, people may talk about reason, but

I am different. I only talk about the firepower and range of the cannon!

Games, funny, no CP.

A deep-sea mermaid who was ready to take revenge on "humans" because of pollution was kicked out of her home because she ate too much. As a result, she became addicted to milk tea, fried chicken, games, and live broadcasts in the human world, and completely forgot about revenge.

Pink hair, salty fish, but edible!

Until a ship salvaged a mysterious statue, and the survival game began.

She was originally playing badly in the human world, but was caught as a human and put into a "survival game".

Cursing the system: "I'm a mermaid! I'm not a human! You caught the wrong fish!"

The compensation can be obtained to upgrade the "Octopus Puppet". The moment she saw the puppet, she thought, "It's so small that it's not enough to eat!"

Fortunately, the octopus puppet was very capable and saved the fish's life... but it also began a long life of exploitation.

From then on, system announcements became her personal show:

The chat channel went viral: Who the hell is this cheater/lucky guy?!

She was trying hard to survive, but one day she suddenly found that the boss she was going to fight looked a little familiar.

The one yawning in the thundercloud is... her grumpy mother!

The one who was drooling while sleeping with the shipwreck around him was her lazy dad!

The seaweed monster that is grinding its teeth (chewing on the reef) is her foodie brother!

Sitting in the center of the vortex... knitting an oversized sweater? It's her arrogant grandmother!

Pai Xingxing:??? So everyone in my family has a stable job, but I'm the only one who got fired?!

I! Don’t! Give up!

In the end, you are forced to survive and explore the truth of the survival game.

Meow, meow meow meow meow, meow meow meow meow... The Son of God: "There is no real fairness in the world, cat." The cat nodded: "I should have an unfair substitute." System: "There is no knowledge that can be learned by reading it once. Please experience its meaning repeatedly." The cat nodded: "It turns out that knowledge can also be eaten." Infinite flow, will become a cat girl but there will be a second volume, single for the time being: jojo7 Puma Yaro → Date a Live → One Piece → Fate/Zero → Touhou Gensokyo → jojo Old World → Puella Magi Madoka Magica → RE0 → Sword Art Online SAO

Since you are here, you should make the best of it. Choosing to integrate into your own identity, then as the ghost king of Mount Oe, the incarnation of Shuten-doji, the party participant, the provider of fine wine, the king of persuading people to drink, Ibuki Suika said that everyone who comes is a guest. There is no friend that cannot be made by a big banquet. Of course, if one meal is not enough, then two meals, three meals... But if an unwelcome guest comes, then she will also let the other party know what fighting is like.

When people are in their third year of high school, they are given a mission by heaven, and they will live forever?

[Your Majesty, a temptress in troubled times is trying to sow discord between you and Prime Minister Wang. She appears gentle, but in reality she is a manipulative and malicious woman. If you listen to her slander and ignore the principles of state, the dynasty will fall.]

Xu Yan looked at the head teacher in front of him and Bai Yueguang sitting at the table in front of him and fell into deep thought.

Going to class = going to court?

Laoban = Prime Minister?

Is Bai Yueguang a temptress in troubled times? The contrast is a bit shocking?

Whose system is so crazy?

…

But gradually, Xu Yan discovered something was wrong.

The cute childhood sweetheart is a yandere, the aloof goddess suffers from a chuunibyou, and the new neighbor sister actually loves to stalk...

The system is a little crazy, but it's right...

[Your Majesty, you and the Saint have successfully achieved "Double Shame", Literary Strength +1, Military Strength +1.]

oh?

…

Due to an accident, Xiyue accidentally came to the world of Terra, but fortunately, it was not Warhammer or Terraria, but Arknights. At the same time, she was also possessed by a medical system, but even in this land, even medical practice is never stable.

At the end of the Great Liang Dynasty, there was famine, great desolation, people eating people, demons rampant, and strange occurrences everywhere.

Bai Qian, who had crossed over, could become stronger by slaying demons; aside from killing demons, her only other hobby was writing in her diary.

[February 16th: I went to a den of wolf demons, killed all sixteen wolf demons including the wolf cubs, but the harvest was not great.]

[March 31st: I arrived at a town controlled by skinning ghouls; there were a total of three thousand twelve people in the town, all turned into puppets by the skinning ghouls. I exorcised them all and finally found a hiding skinning ghoul in a corner of the town and killed it.]

[December 8th: I met the emperor of the Liang Dynasty, who was a horned python demon. In front of the court officials, I skinned it and pulled out its bones. Not a single official stood up to defend this emperor. What did that ghoul I killed before say? They are disloyal to their lord and deserve to die.]

[December 9th: The weather was nice today, so I went out and sealed the capital of Liang. Regardless of good or bad, I slaughtered six thousand four hundred sixty-one demons and seventy-three strange beings.]

Fate is like a gear. Once you touch the gear, you can't turn back.

One day, by chance, the boy was turned into a girl by his sister. She is a witch who has the duty to protect the city and uses magic. It doesn't matter if I want to protect the city, but why do I have to become a girl? The 18-year life of Hiroki Kobashi as a man came to an end.