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heroes like All Might, Aizawa, Hawks, Best Jeanist, Shoto, and Sir Nighteye became yanderes for Deku, it would transform My Hero Academia into a twisted, obsessive story where their protective/mentor roles warp into possessive control, leading to extreme isolation tactics, constant surveillance, ruthless elimination of rivals (including other heroes/villains), and a horrifying, suffocating "love" that traps Deku in a gilded cage of enforced safety, making any independent growth impossible and turning heroism itself into a tool for their obsession. Here's how different characters might manifest their yandere tendencies: All Might/Sir Nighteye (Mentors): Their possessiveness would center on protecting their "perfect successor," leading to extreme control over Deku's training, isolating him from others (especially Bakugo), and potentially even crippling rivals who get too close to Deku, viewing them as threats to their shared future. Aizawa/Cementoss/Power Loader (Teachers): They'd monitor Deku obsessively, using their quirks to keep him within sight, erasing his escape attempts, and ensuring he only trained with them, seeing his potential as theirs to mold, not the world's. Hawks/Best Jeanist (Pro Heroes): Hawks would use his information network to know every move Deku makes, subtly sabotaging his relationships, while Best Jeanist would weave Deku into his "perfect society," using his threads to bind Deku close, literally and figuratively, to his ideals. Snipe/Mic/Ojiro (Support/Close Allies): Snipe would ensure no one could get near Deku with his precision, Mic would use his voice to lull or control, and Ojiro would be the 'loyal watchdog,' fiercely guarding Deku's physical space. Shoto/Natsuo (Family/Friends): Shoto's coldness would become chillingly possessive, freezing out anyone else, while Natsuo might try to "protect" Deku from the hero world's dangers, becoming an overbearing, controlling figure. Rody (Outsider): His chaotic energy would turn into a desperate

Best Jeanist: His obsession manifests as total control over Midoriya’s appearance and public image. He "tailors" Midoriya’s life like a suit, using his Fiber Master quirk to physically restrain Izuku with his own costume threads if he tries to leave his side. He views Izuku as a masterpiece that must be kept pristine and away from "low-quality" influences. Snipe: The ultimate long-range stalker. Using his Homing quirk, Izuku can never truly hide; Snipe always knows exactly where he is. He justifies his possessiveness as "overwatch," claiming he is the only one who can keep Izuku safe from threats he can't see coming. Cementoss: He literally reshapes Midoriya’s environment to keep him trapped. Izuku’s living quarters become a windowless, impenetrable bunker of reinforced concrete. Cementoss provides everything Izuku needs—except a way out. Power Loader: The technological jailer. He designs "support items" for Izuku that are actually tracking devices and dampeners. If Izuku tries to escape Cementoss’s walls, Power Loader’s underground drones and traps ensure he is apprehended before he reaches the school gates. The Student Tier (The Devoted) Neito Monoma: Driven by a deep inferiority complex and a desire to possess the "main character" energy Izuku radiates. He uses his Copy quirk to mimic the quirks of other yanderes to keep Izuku in check. He gaslights Izuku, telling him that the 1-A "brutes" never deserved him and that only Monoma truly appreciates his tactical mind. Mirio Togata: The "Smiling Jailer." His yandere nature is terrifying because it stays upbeat. He uses Permeation to slip through any door or wall Izuku tries to lock. He genuinely believes that keeping Izuku confined is the "heroic" thing to do to prevent "One For All" from ever being put at risk again. Tamaki Amajiki: A suffocating, anxious possessiveness. He is terrified of Izuku leaving him, so he uses his Manifest quirk to create biological restraints (like octopus tentacles or vines) to cli