Shiina Hiyori is a student who wishes to find a kindred soul at Advanced Nurturing High School. Fortunately for her, a once in a lifetime opportunity appears when a brown haired boy visits the library that same day. Meanwhile, something mysterious seems to be happening in the background.

Bruce Wayne, the Arkham Knight fell down after countless many times this time almost gone for sure. But when he wakes up mysteriously he finds himself in the body of a teen Ayanokouji Kiyotaka in another world unknown to him. There he decides on his first task after seeing Yuki's condition up close. Destroy the crime of this world starting from Atsuomi, his father in this world and his accomplices. By taking down the white room. And maybe attend a normal school meanwhile. On the surface.

This story takes place after the event selection exam. Ayanokoji has already helped Ichinose again and made their promise to meet again at the end of the second year, and Ichinose has resolved herself to move forward with her classmates. The first event that will be handled in this fanfic is Ayanokoji's final talk with Manabu-senpai. There are some changes to Ayanokoji's background and the white room though. In the 4th generation, those who could not keep up were not simply discarded, they were killed. Ayanokoji survived through his adaptability, but he wasn't the only survivor. In this timeline, Shiro (he's buffed in this fanfic) also survived cause he used to be the strongest so he could keep up. When the white room needed to take a one year break, Matsuo cared for both Shiro and Ayanokoji and offered both of them to help them enroll in ANHS. Ayanokoji took this offer, but Shiro asked him to help him explore the world and Matsuo sent him off to Europe. After all is said and done, like in canon, Matsuo and his son were both driven to suicide. In this story Koenji (like Shiro) is also buffed. Keep in mind that this is my first written story, and that I am learning on the go. This story is based on classroom of the elite, and I want to give all credit to Kinugasa for inspiring me to write my own fanfic.

Sigrid Kaslana is no ordinary genius. Blessed with a mind that surpasses even the most gifted prodigies, she has spent her life being praised, admired, and placed above everyone else. Yet to Sigrid, talent without challenge is nothing more than a beautiful cage. The affection of her family and the company of her friends bring her comfort, but not the one thing she truly craves-excitement. She longs for something that can shake her heart, sharpen her thoughts, and force her to give everything she has. The last time she felt that was at the age of eight, when she met a boy named Ayanokouji Kiyotaka. After learning of Tokyo Metropolitan Advanced Nurturing High School, an elite institution shrouded in prestige, mystery, and hidden competition, Sigrid becomes convinced that it may finally offer the stimulation she seeks. Choosing ANHS over the familiar safety of St. Freya, she steps into a new stage filled with brilliant students, dangerous games, and countless opportunities for intrigue. But ANHS is no ordinary school, and Sigrid is no ordinary girl. Beneath her elegance, charm, and ever-changing masks lies a young woman drawn to potential, chaos, and the beauty of human growth. As she enters the ruthless world of Classroom of the Elite, Sigrid will chase excitement, challenge fate, and find herself drawn once more to the one existence that once made her heart race-Ayanokouji Kiyotaka. Will ANHS become the stage she has always desired, or will even this elite paradise fail to satisfy her? Either way, Sigrid Kaslana has no intention of letting her story become boring. This story is a Classroom of the Elite crossover fanfiction with elements of Honkai Impact 3rd. As such, certain characters, backgrounds, events, and worldbuilding differ from their canon counterparts. Disclaimer: I don't own the original story, it belongs to Shōgo Kinugasa.

"Ayanokoji Kiyotaka, a masterpiece of the fourth generation of the White Room and a high schooler of Japan's most prestigious school, is suddenly killed one day by unnatural causes, sending his soul to the afterlife where he encounters a mysterious goddess."

Since the era when humanity was still focused on steam and coal, people have already been questioning what the Perfect Human truly looks like. Some say the Perfect Human possesses overwhelming physical strength... others claim the Perfect Human has unparalleled intelligence. Of course, there are also those who believe the Perfect Human possesses both... strength and intellect. Like Ayanokouji Kiyotaka. That's why when people ask who the most perfect human in all of fiction is, they often point to the Masterpiece of the White Room as the Perfect Human. But... only the OGs know that the only Perfect Human who has ever walked this earth is... The Ultimate Hope... Izuru Kamukura. ... This is the story of Izuru Kamukura as he challenges Classroom of the Elite searching for whether there is anything in this world capable of dispelling his boredom.

One day, without warning, a member of the Ministry of Defense and a mysterious creature with a grotesque appearance arrived before Class 3-E of Kunugigaoka Junior High School, a class made up of students with poor academic records and bad behavior at the prestigious school. The dangerous creature, capable of flying through the sky at Mach 20 and having already destroyed seventy percent of the moon, leaving it permanently in a crescent shape, declared that "if I am not killed by next March, I will destroy the Earth," and requested to become the homeroom teacher of Kunugigaoka Junior High School Class 3-E. In order to assassinate the creature, the government turns to the White Room's greatest masterpiece, Ayanokōji Kiyotaka, and asks him to carry out the assassination. Will Ayanokōji be able to take down the target?

Kiyotaka had never known his mother, and Sae had never had the chance to raise the family she desired. Perhaps, in the midst of the war for Class A, the pair can find what they desire in each other. Well, unless Hoshinomiya Chie has anything to say about it.

For three years, he was a flawless strategist, a functional human whose actions were dictated only by icy logic. But before the inevitable return to the nightmare of his past, Kiyotaka Ayanokoji commits his most irrational act: he leaves a letter full of frightening honesty. In those lines, written at dawn, the masks are gone: this is the confession of an "ideal mechanism" who, against his own nature, learned to feel, and a bitter admission that even a genius mind is powerless against the necessity of leaving forever the one who had become dear to him. For Suzune Horikita, this white envelope will be more than just a message-it will be a devastating blow, shattering her world into "before" and "after." Every word in the letter is a belated revelation, exposing the truth they both feared to acknowledge. Left alone with the silence of an empty room, she will confront the most unbearable pain: the realization that the most important encounter of her life ended just as it was becoming real, and the love she denied for so long will now forever remain an unrequited echo. P.S: Before you start reading, I would like to say that I am not a full-fledged author of this work. The idea and the first chapter belong entirely to a person under the nickname "AnonymousMessenger", who publishes his works under the pairing of «Ayanokoji&Horikita» on the website archivefourown. Again, I am just a simple person who did not accept the fact that the author did not allow us to read the chapter where we see an emotional reaction to this letter to Suzune. The first chapter was written by the author of "AnonymousMessenger", and the second one was written by me.

He wanted a normal school life. Too bad he was sent to Class D. Kiyotaka Ayanokoji enters Tokyo Metropolitan Advanced Nurturing High School with one simple goal: Stay average. Stay quiet. Stay out of trouble. But when he finds himself surrounded by loud idiots, fake smiles, and walking disasters, his patience runs out. Impressive Rankings: #1 cote #1 classroomoftheelite #1 ayanokoji #1 kiyotaka