Because of her succubus attributes, she was kicked into another world. Bad news: her parents were celebrating their death, and her girlfriend had no sense of boundaries and was kissing and snogging with her male best friend. Good news: it wasn't her, but her counterpart from another world, in her own body, while the other person had become a part of her memory. She made a promise to Hanyu Genichi, who had become a part of her memory and replaced the other person. "Don't worry, brother, I'll help you deal with that woman with no sense of boundaries and her green tea boyfriend." Then Hanyu Genichi discovered that the woman with no sense of boundaries was Sawamura Spencer Eriri, and the other person's green tea boyfriend was called Aki Tomoya?

I've traveled through time. The cheats are all RTS games, but what should I do if I haven't played them? It's okay. The first is the safe world of Kabane. Let's use the base of Red Alert 3 to test the waters. In short, let's set a small goal first: conquer this world!

Kabane of the Iron Castle

The world was driven by the waves of the industrial revolution. When the world changed from the early modern times to the modern times, undead monsters suddenly appeared. Wrapped in a steel membrane, it will not be destroyed as long as the heart is not destroyed. People bitten by it seem to be resurrected after dying once and begin to attack humans. After that, these monsters, called Kabane, proliferated explosively and covered the world.

In order to fight against the threat of Kabane, the people of the Far Eastern island country of Japan built castles called "posts" in various places, trapped in them, and tried every means to survive. The only thing that can travel between the posts is the armored steam locomotive (commonly known as Juncheng). The posts finally guaranteed life through the integration of their respective products.

------------

World location: Logistics World

Main cheat forces: Red Alert 3, Red Alert 2: Yuri's Revenge

Main mods: Red Alert 3: Corona, Red Alert 3: Remix

Altria: Rebellious son! How dare you snatch the queen from my father?!

Mordred: Ghost mother, that's obviously my brother!

Caught between mother, mother, mother, mother, mother, mother, mother... and my sister, the Shura field

This is a single-female-lead story, not a time-travel/invincible tale. Please stop bringing up the early camera thing! The protagonist isn't a time traveler! She's not that close to Misaka Mikoto at the beginning; that plot point will be resolved around chapter 170!

Accelerator: I am the strongest.

Touma Kamijou: Ever since the new neighbors moved in upstairs, I feel like there are more and more things happening around me.

Misaka Mikoto: I'll definitely beat him next time.

Shirai Kuroko: That guy who looks like a mountain, my dear older sister would never like him.

Teacher Xiaomeng: That child? He's really a headache.

Zero: I just want a peaceful campus life. I don't want to cause trouble, but trouble has come knocking on my door. Shouldn't I clean up this mess?

An uninvited British maid, a thrilling race against time.

On his eighteenth birthday, celebrating alone, Ion suddenly learned a shocking secret—his biological father was actually the Archbishop of Heaven's Mandate, Otto Apokalis!

"The Archbishop has said that you will inherit the position of the next Archbishop of Heaven's Mandate. But before that, I will train you to become a qualified successor to the Archbishop," said the elegant maid, Rita Rossweisse, who knocked on his door.

【No system】【Multiple female protagonists】

Artistic Edition: Have you ever imagined your fantasies coming true? Have you ever imagined holding a card and calling out the name of a character you've fantasized about? Ultraman? Armor Hero? Or perhaps some familiar anime character?

Pick up this card and join this story of fantasy and redemption.

Non-literary version: Lala? Kiana? And Alicia?! Where did this Doro come from?!

Tianhuan, a young man who makes cards out of his imagination, sometimes turns into Tiga and elbows the Kirielodo, sometimes picks up Zangetsu to kill evil spirits, and even transforms into Nawa to burn all sins.

And all kinds of strange friends gathered around him.

Tianhuan: "We're friends, right?"

Alicia: "Guess♪"

Higashino Yuu never imagined that the "cognitive reconstruction" ability he awakened after traveling to Academy City would become the ultimate cheat for building a harem. Saying "You're a little attracted to me" to Misaka Mikoto makes the Railgun's cheeks turn red as ripe apples. Mummifying "You want to understand me" while locking eyes with Shokuhou Misaki makes the Tokiwadai Queen's remote control quietly aim at him. Even a saint like Kanzaki Kaori can blush at the mere suggestion of "Come see me tonight." From Judgment Officer Hatsuharu to ANBU TEM's Mugino, from the mage-minded Index to the one-eyed demon god Othinus... If he so chooses, rewriting the perceptions of girls and making them utterly devoted to him is a matter of thought. Higashino Yuu held his forehead, looking at the group of beautiful girls surrounding him, sighing with both helplessness and excitement, "I told you not to push... Okay, whoever kisses me first, I'll be theirs tonight." This is the story of a man who uses his powers to forcibly conquer every goddess in Academy City, turning his "harem" into a "settings manual"—after all, for him, making beautiful girls fall in love with him is easier than unscrewing a bottle cap. PS: This book is more about daily life, with more peach plots in the later stages. I'm not a fan of meticulous research or rigorous settings, so please don't criticize me if you mind.

Devastating news from Runeterra: the female heroes have collectively ascended to the planet of happiness. Blessed by the demon of happiness, Fahn now commands wind and lightning. Zaun encounters a monster-like power; Jinx, despite her best efforts, is powerless against it. A single injection turns her blood into a thick, oily jelly, her heart pounding and her eyes sparkling. Piltover, enraged, launches a righteous crackdown, but Caitlyn betrays them, indulging in a dose of happiness hormones. Dopamine activates her nerves, causing her to lose control on the spot. The hormones are too pure, too potent; she's left weak and hunched over, wolfing down a train-sized bento box in her small room. Noxus is astonished and secretly copies the formula, but a clumsy experiment by the beautiful heroine causes the happiness hormones to spread like a plague, ensnaring the entire nation. The Katarina sisters, however, enjoy their blissful lives. Curiously trying it out, Lux transforms into a Demacian water sprite, dragging Fiora to be her sister, enthusiastically recommending Sona, and then, under the bright sunshine, pulling her underwater—"You're next!" Freljord unified the frozen plains, the three sisters united to fight the demons. Their combined strength was unbreakable, but unfortunately, Faen's power was too great, and they temporarily retreated, suffering a crushing defeat and forced to sacrifice everything. Ionia used gentleness to overcome strength; Venerable Karma sacrificed herself to the tiger. Irelia, disbelieving her brother's actions, fought a fierce battle that overwhelmed the seven armies, leaving them weak and powerless, yet still proclaiming their invincibility… (Word limit applies). ————————The Zaun arc includes some political development elements; the ending of the Zaun arc transitions to a pure harem fantasy adventure.