Foldabody

Foldabody is the Transformation Quirk held by Shinya Kamihara, the Pro Hero Edgeshot. It arrives in Chapter 88 and in Episode 47 of the anime, and it is rated for close range. The power governs two things at once: how thin its owner can become, and how far his limbs will stretch.

Shinya can press himself down into a flat sheet and then fold that sheet into any configuration he needs. Narrow gaps stop meaning anything, and moving unnoticed becomes routine. Shapes change in an instant, and any section of the body can be reworked on its own, which buys him mobility, flexibility, and a level of aim most fighters cannot match. Hard training pushed the transformation itself past the speed of sound.

The cost sits in his lifespan. Thinning the body beyond a certain point begins consuming him, and at the extreme he starts to fade outright. Zenith is the proof: reducing himself to the width of a thread to keep Katsuki Bakugo alive left him breathing but wrecked, a barely conscious filament who would need time and serious medical care before recovery was even on the table.

Regrowth is part of the package. From that thread state, a miniature head perched at one end, he slowly rebuilt himself, first sprouting tiny arms with five tiny fingers apiece. Eight years past the Final War he stands at full height again, with only a left arm still spun from thread and still filling out.

Shinya Kamihara is the Quirk's only wielder, and his command of it defines the Ninja Hero's entire method. He slides flattened through doorways to reach places nobody expects him, and in combat he folds into a blade thin enough to run an opponent through before they register the movement. Choking off the blood reaching a target's brain drops them almost at once. Magne watched him do exactly that to Kurogiri and could not work out what had happened. Airborne, he twists into a drill and corkscrews around a target, reading the terrain as he goes.

His named techniques all grow from the same trick. Fishhook Snag flattens and twists one arm, hand excepted, then sends it out to hook an enemy and reel them back. Spiral Spear Hand narrows him to a pointed string and drives that arm through an opponent to halt them. Thousand Sheet Pierce runs the same skewer, then finishes by shutting down blood flow to leave the target unconscious. Zenith extends Thousand Sheet Pierce to its limit, threading Shinya inside another body so he can work as living surgical suture across ruined organs. Pulp-Thread Throttle wraps him around a target as a coil, stabbing through them again and again.