So-called "doujins" broadly refer to doujinshi created based on certain themes, mostly consisting of derivative works, with 18+ doujinshi making up the majority. While there are indeed original and all-ages doujinshi, generally speaking, they refer to 18+ doujinshi.
Highly popular works often spawn large quantities of 18+ doujinshi, with those featuring a particular character as the protagonist generally abbreviated as "XX books."
For example, me, Anastasia—my 18+ doujinshi are abbreviated as "Anna books." (TN: Someone will need to fill me in. Not like that.)
Even among 18+ doujin books, there are many varieties. There are pure love stories with sincere one-on-one relationships between the female and male protagonists, and there are NTR stories where the female protagonist clearly loves the male protagonist but submits to others.
As for me—
"Anna-san appears most often i humiliation-oriented doujins."
I received this rather shocking truth.
"Beastkin aren't the type to use drugs, right? Lies! Time-stop magic can't possibly last that long! Tentacle monsters? I don't remember such creatures existing! I-I wouldn't give in after just a few times...!"
"Anna-san, please pull yourself together!"
I hate H stuff the most...
If there's a next life... Please let me reincarnate as a salted fish...
"Anna-san has stopped thinking!"
"—I don't understand!"
I slammed the table, accidentally startling Carol Cat.
"Isn't pure love good?! Why does everyone like seeing me dominated by big men?! And just how weak am I that I can't even beat goblins?!"
"Pl-plot necessity, meow..."
What plot necessity? If you put this kind of plot in a novel, it's complete garbage!
I admit that without a master I can't display my full power, but me becoming weak doesn't mean goblins became stronger. Believe it or not, I could find a goblin tribe right now and solo clear it. No matter how weak I am, there's no way I could be captured by goblins.
"It shows... that Anna-san is very popular, meow..."
Who measures popularity with doujins?! There are nearly three digits worth of doujin about me falling together with the saint. So doujins are this kind of thing... I misjudged you all...
[Anastasia's affection toward "Anna's Support Group" (all members) -1]
"...Speaking of which, why is my personality in doujinshi always, um, very… that?"
"In 18+ derivative works, character assassination is common."
"But among the pure love ones, there are quite a few doujinshi where I reverse-dominate my master, making my master cry. Isn't that too strange?"
"Umu nya, it might be caused by a very famous series—it's Anna's Support Group's family heirloom."
Apparently in doujins, my personality tends toward being a succubus.
Carol Cat told me in detail about a super popular doujinshi series featuring me.
Initially, the plot went like this: I have a useless little master, and while we're out traveling, we accidentally get captured by bandits. Although I don't quite understand why I would make such a stupid mistake as letting my master get caught, or why I would obediently put down my weapons and surrender, anyway, both my master and I were captured alive and brought back to the bandits' stronghold.
The subsequent plot was nothing more than dozens of bandits subjecting defenseless me to inhumane torment... All the readers who were tricked aboard thought so, not knowing the car doors had been welded shut.
The plot direction gradually became bizarre. As the saying goes, there's no field that can't be plowed, only oxen that die of exhaustion. During the process, I awakened strange attributes.
The bandits taking turns completely failed to notice that I was starting to become proactive. Much later, they finally discovered that more and more of their comrades were collapsing from exhaustion, but it was too late. The plot evolved into me conducting a one-sided massacre of the bandits, with them fleeing in panic and disarray.
What's deadly is that the doujin website actually had bullet comments. The gentlemen who had taken their hands off the keyboard for the first few minutes actually sent bullet comments cheering on the bandits. "Don't give up! Everyone!" "Gather all your energy for the warriors who contributed countless doujin scenes!" "Live on, please, good people deserve long lives..."
But it was useless. The last bandit died from being drained dry by me while having flashbacks about "wanting to go home and get married."
The bullet comments exploded instantly, with the entire screen filled with "Everyone stand up," "Heroes are immortal," "I cried, what about you," "Salute to the heroes," "They used their lives to create happiness for us," "Don't dare read the next chapter," "Humanity utterly defeated." Despite different languages, different races, and different skin colors, gentlemen from all over the world unanimously shed tears for the complete annihilation of this bandit group, forgetting that I was supposed to be the victim.
The doujin's ending was me rescuing my master after single-handedly draining the bandit group dry, returning to town to recuperate. But my master's health declined daily. Despite doing nothing, they became more haggard each day.
One night, the master was awakened by some commotion.
The doujin ended with "Master, I'm sorry... Anna has already broken ❤" and the little master's terrified and despairing expression.
The End.
Bad End?
The early stages' excellent art style that made people nosebleed and practical, gameplay-rich plot formed a stark contrast with the later stages' extreme reversal, ultimately causing this series to become Anastasia's most classic 18+ doujinshi. Every year on the release date, gentlemen from around the world hold memorial services for the heroically sacrificed bandits. Truly congratulations, congratulations.
"My reputation is completely damaged?!"
"Yes..."
No pictures needed—simple text like "Anna.jpg, bandits.jpg" could evoke countless gentlemen's painful memories.
In summary, the only potentially useful knowledge I learned is that boys hide doujins under their beds. I hope I'll never need to use this knowledge. Incidentally, I absolutely won't feel happy just because my master's collection consists entirely of maid doujin.
Although it differs somewhat from my initial hypothesis, at least I've figured out what "doujins" are.
Carol Cat... should be a true fan of mine, knowing even Anna's Support Group's treasured “heirloom” so clearly.
I sorted out my chaotic and complicated feelings and decided to introduce Carol Cat to Lily.