A Certain Scientific Klein Bottle

After retiring, Chi Jiang Nayue is rehired by his creator, the Book, to take up the job of savior once more. The only difference is that his mission has changed from saving his own world to saving parallel worlds. On the first day back at his old job, Chi Jiang Nayue, in his ghostly form, is dropped into the mission world from midair by the Book. Directly beneath him, the staunch materialist Amuro watches as a boy plummets from the sky and crashes into his head, then passes right through him. In two short seconds, the staunch materialist loses the first part of his title. The ghost himself merely wipes his face and gives him an innocent but chilling smile. "Hi, your ghostly spirit delivery is here. Please sign for it?" Amuro: ...? * The amnesiac ghost appears in the life of an undercover agent, knowing nothing. To break their inexplicable bond, they decide to search together for the past they have long since forgotten. And on the day their journey ends, a cruise ship turned into fireworks sinks into the sea, carrying the truth from eight years ago with it. The sunrise and flames mingle, like the life of an eighteen-year-old boy burning away. The undercover agent escapes and calls out the ghost's name. At the pier, there is only the sound of waves rolling in with the heat of the flames. And the last words the boy left the world, words he cannot hear. "Next time, let's go to the amusement park together again, okay?" [Ghostly companion, a journey to recover his memories] * In a magical Tokyo where everyone can turn into a small animal, the mysterious cat-cafe owner turns out to be the heir to a dog-loving black-clad organization, secretly plotting to destroy every cat in the world with catnip and chocolate! The Red Faction, battling wits with thin air: Is that really your scheme? The crowd: Overthrow the evil human regime! The world belongs to the Organization! ... (turns around) By the way, what was our organization called again? The Endangered Species Protection Organization? Old man Karasuma: Get lost! Meanwhile, the shop owner strolls past and smiles at the camera, looking pure and innocent. "What kidnapping? I just want to give everyone a warm home." [Black Bombay Cat, let's turn the world into a playground] * There's also a blank-faced little boy with 10,571 clones, Tokyo's Batman who wants to save the city from the abyss, a gacha-machine big brother who shows up at an amusement park to a high school detective, and a demon savior who becomes the villain and beats everyone up just to stop his best friend from turning evil... Chi Jiang Nayue says he had a great time and enjoyed himself so much he forgot to go home. * Meanwhile, in Chi Jiang Nayue's own home world, someone sees the real Fourth Calamity having a blast in a parallel world in a dream, then watches himself get launched into the air in all sorts of ways by the other guy. Furuya ○ wakes up in a cold sweat. 1. The second installment of The Red and Black Faction Simulation Game. It follows the previous work's setting, but you can read it without having read the first. 2. The protagonist is an unconventional Fourth Calamity. No System, no forum. 3. Quick transmigration (or possibly slow transmigration). 4. No CP, just friendship forged in the spirit of Jump. 5. Please don't insult the characters in the comments. Thank you. The Investigator's High-Risk Job!, ID: 9236124 When creating a character sheet, Tao Chuan chose random and left everything to fate. [...So 40 Dexterity and 90 Appearance are your destiny?] the KP asks cautiously. "What about the other 40?" Tao Chuan says, touched. "A super-charismatic, handsome guy with one bad leg. Solid." The KP, who knows the story, looks at the name of a certain curly-haired police officer in the first row of the sheet, then at the curly-haired police officer who is still alive in this world, and falls into deep thought. Does Matsuda know you're spreading rumors about him out there? * Maybe he didn't know at the time, but he found out later. Tao Chuan gave it his all to clear the scenario, after all. So the people from the real world, who were in the same scenario, saw the following: Facing the scenario's boss, who is about to start a fight, [Matsuda], having rolled a critical success on Dexterity, spins around with unbelievable agility and dodges the attack, his prosthetic leg glowing. "That startled me." The curly-haired investigator calmly adjusts his sunglasses. "You're not so tough after all. Even a cripple can dodge that." Beside him, Furuya, who failed his Dexterity roll and fell over: ...Is this guy taking a dig at me? Faced with a scenario NPC he needs to interrogate, [Furuya], after a critical failure on Charm, tries to run, only for the deranged NPC to grab him and confess their love with great passion. "Calm down..." The elementary-school investigator, with a build of 15, pushes the NPC's face away as it keeps getting closer. "It's illegal to like me!" Edogawa, standing nearby, is horrified: Somebody help! There's a person grooming a kid! And it's mini Mr. Amuro! When he hears whispers carried on the sea breeze, [Kudo] gets a critical success on his Inspiration roll and goes completely mad, showing everyone how a mentally ill person takes care of himself. "Ran? What a coincidence, you're here too." The black-haired investigator, who has only just reached adulthood, smiles and greets her. "Want to go over there together?" The phantom thief, who was only passing by and got dragged along, stares at him and draws a sharp breath. You're calling me Ran? And so on. The locals are dumbfounded. Even with the truth right in front of them, they don't want to admit these people are their parallel-world selves. Tao Chuan gives the KP the warmest possible question: "Are you a coin?" It's either a critical success or a critical failure. Are you messing with me?! * Some time later, Tao Chuan, now thriving as an investigator, calmly tells the story of his past. "Becoming a legendary investigator is easy. I was only sacrificed by cultists an average of three times a week, destroyed their apocalyptic schemes twice, and nearly got assaulted once..." "...How are you still alive?" "Yeah, how am I still alive? (^▽^)" * Reader's Guide: 1. The story mainly uses the CoC 7th Edition rules, but sometimes uses house rules depending on the author's laziness and how the story develops. The priority is for the investigators to have fun and for everyone to enjoy reading. 2. Unconventional Lovecraftian horror. The scenarios serve the story. 3. Except where the plot requires otherwise, most dice-roll results depend on the dice goddess's mood. No fudging. 4. Don't believe the first rule XD Theme: Those who know the future change the world; those who lead the way create the future.