Give a Really Shortest Backstory about TMNT 2012 Series/SCP Foundation x My Hero Academia Crossover Timeline, SCP-999-1 “Leonardo” (Mirko’s Crush/soon-to-be-boyfriend) meeting these characters, Izuku Midoriya/Deku, Katsuki Bakugou/Kacchan (Who is jealous at Leo and he hates him), Shoto Todoroki, Ochaco Uraraka/Uravity, Eijiro Kirishima/Red Riot, Momo Yaoyorozu/Creati, Tenya Lida/Ingenium, Fumikage Tokoyami/Tskuyomi, Mirio Togata, Kyouka Jirou/Earphone Jack, Mashirao Ojiro/Tailman, Nezu, Denki Kaminari/Chargebolt, Shota Aizawa/Eraser Head – Class 1-A’s homeroom teacher, Tsuyu Asui/Froppy, Yosetsu Awase, Saiko Intelli, Kota Izumi, Hanta Sero/Cellophone, Mezou Shouji, Rikido Sato, Toru Hagakure/Invisible Girl, Hitoshi Shinso, Tamaki Amajiki, Nejire Hado, Mina Ashido/Pinkie, Minoru Mineta/Grape Juice, Itsuka Kendo, Koji Koda/Anima, Mezo Shoji/Tentacole, Yuga Aoyama/Can’t Stop Twinkling, Nemuri Kayama, Ken Ishiyama, Snipe, Ectoplasm, Higari Maijima, Sekijiro Kan, Sorahiko Torino, Rikido Sato/Sugarman, Mezo Shoji/Tentacole, and then the Department of Support Students, Mei Hatsume, Power Loader, Inasa Yoarashi, Hatsume’s classmates, and the Pro Heroes, All Might/ Toshinori Yagi, Endeavor/ Enji Todoroki, Hawks/Keigo Takami, Best Jeanist/Tsunagu Hakamata, Mirko/Rumi Usagiyama (Leonardo’s Crush/soon-to-be-girlfriend), Edgeshot/Shinya Kamihara, and Midnight/ Nemuri Kayama, Cementoss/Ken Ishiyama, Mt. Lady/Yu Takeyama, Gang Orca/Kugo Sakamata, Fat Gum/Taishiro Toyomitsu, Kamui Woods/Setsuno Tokage, Present Mic/Hizashi Yamada, Crust/Kuin Hachisuka, and more of the Heroes characters in My Hero Academia for the first time, and then later on meets the villains, All For One, Tomura Shigaraki, Dabi, Himiko Toga, Twice, Stain, and Overhaul, and the thing is little did they all know that SCP-9999-1: “Leonardo” Object Class: Euclid Special Containment Procedures: SCP-9999-1 is to be contained within a standard humanoid containment cell at Site-██. The cell must be equipped with basic amenities, including a bed, a desk, and recreational materials suitable for a humanoid subject. SCP-9999-1 is to be provided with regular meals and allowed access to a small training area for physical exercise. Interaction with SCP-9999-1 is permitted only under the supervision of Level 3 personnel or higher. Description: SCP-9999-1, known as “Leonardo,” appears to be a humanoid turtle of approximately 6 feet in height. Leonardo possesses numerous anomalous abilities, including Divine Perception, Divine Strength, Divine Endurance, Divine Healing, Divine Weaponry, Infinite Knowledge, Infinite Speed, Infinite Stamina, Infinite Potential, Enhanced Senses, Superhuman Agility, Immortality (Types 1, 2, 3, and 5), Shape-Shifting, Energy Manipulation, Reality Warping (Types 1, 2, 5, and 7), Harmonic Resonance, Order Manipulation, Harmony Projection, Divine Guidance, Infinity Manipulation, Transcendence, Divine Intervention, Reality Perception, Order Embodiment, Infinity Blades, Divine Leadership, Time Manipulation, Cosmic Awareness, Divine Shield, Harmony Manipulation, Reality Restoration, Celestial Communication, Eternity Perception, Omnilingualism, Divine Empathy, Infinite Adaptation, Cosmic Harmony Blast, and Invincibility, Unstoppability, and Undefeatability, Leo’s charming personality and attractive appearance only deepen Mirko’s affection for him and As their relationship develops, Leo’s charismatic and charming nature captures Mirko’s heart, and the others notices it,  However, as the crossover continues, Leonardo proves himself to be a valuable asset to the group, using his reality-bending powers to aid in battles against villains and provide crucial support to his friends. Despite his immense power, Leonardo remains humble and continues to prioritize the safety and well-being of others. Eventually, the heroes and villains alike come to respect and admire Leonardo, recognizing his potential as both a hero and a force to be reckoned with. With his growing bond with Mirko and his unwavering dedication to justice, Leonardo becomes an integral part of the My Hero Academia universe, forever leaving his mark on the world of heroes and anomalies, and everyone knows who Leonardo is because he is a Ninja Turtle but they don’t know that he is a SCP but he is friendly and have unbeatable clever and witty comebacks, and The Characters still maintain their original personalities and dynamics, also Tsuyu still says Ribbit like in My Hero Academia, and Leonardo becomes the #1 Hero.