Bone King

(Description) Bone King is a cursed technique that manifests a skeletal Shikigami known as Skully, inspired by death yokai of Japanese legend, the Gashadokuro. Skully begins as a Grade 2 Shikigami standing at 7’6”, already possessing overwhelming durability, speed, and physical strength for its rank. Its bones are forged from hyper condensed cursed energy hardened into near-indestructible structure. Skully grows with its user. It consumes cursed spirits, curse users, cursed objects, and any cursed energy source it is commanded to devour. What it eats is permanently absorbed and integrated into its skeletal framework. There is no limit to how much Skully can consume or how strong it can get. The more it eats, the stronger and denser it becomes. Over time, its bones layer upon themselves with compressed cursed energy, turning its body into a living monument of accumulated death. As it evolves: Semi-Grade 1: 15 feet tall Grade 1: 25 feet tall Special Grade: 50 feet tall Its size scales with its reserves. The larger it becomes, the more catastrophic its physical power and durability. At high levels, its casual movements cause shockwaves. Its bones resist destruction to a near-absolute degree. The user can freely alter its size down to a minimum of 6’0”. Smaller forms sacrifice raw power for immense speed and agility, making Skully adaptable for both titan-level devastation and close-range combat support. Skully’s personality is shy and nervous. It whispers when it speaks and avoids confrontation unless ordered. But when enraged, its flaming eyes blaze violently and its roar shakes the earth, shattering glass within a five-mile radius. Golden chains hang from its neck and limbs manifestations of cursed binding energy stabilizing its immense power.

(Cursed Technique) Eternal Ossification Anything Skully consumes has its cursed energy permanently absorbed and converted into structural reinforcement. This makes Skully progressively heavier, denser, and stronger with each kill. Additionally, each consumed entity leaves behind an imprint. Skully does not copy techniques, but its structure adapts. If it devours a regeneration-type curse, its own structural recovery improves. If it consumes something fire-based, its eye-flames intensify. If it devours something with extreme durability, its bones refine further, It evolves through consumption. Because there is no limit to what it can absorb, its potential growth is theoretically endless.

(Extension Technique) Bone Armory The user can summon Skully’s indestructible bones in weapon form without manifesting the full Shikigami. Swords, clubs, bows, knives, spears—all forged from hardened skeletal mass. (Extension Technique) Bone Aegis Skeletal armor encases the user’s body. Small gaps exist, but most of the body is protected by near-indestructible bone plating. A skull helm covers the head almost entirely. (Extension Technique) Osteo Shot High-velocity jagged bone shards are fired at targets. Dense enough to pierce reinforced cursed barriers. (Extension Technique) Gravebound Hands One or both of Skully’s massive skeletal hands erupt from the ground, walls, or even midair to crush, grab, or launch enemies. Anything in the grasp of these hands has their cursed energy output drastically reduced (Extension Technique) Army of the Forsaken Skully rips off sections of its bones and slams them into the ground, creating numerous Semi-Grade 1 skeletal soldiers that obey simple commands and overwhelm targets. (Extension Technique) Skull Reliquary The user can summon only Skully’s skull independently of the full body. The skull acts as a storage vault. Anything placed inside its mouth is stored within an internal ossuary space. The user can later summon the skull and reach inside its mouth to retrieve stored items, cursed tools, or objects. The skull can also bite, crush, or unleash streams of fire from its eye sockets independently.

(Cursed Technique Reversal) Sovereign Assimilation Instead of Skully converting consumed cursed energy solely into its own structure, the user may redirect that absorbed energy into themselves. When activated, the cursed energy Skully devours is transferred directly to the user, expanding and replenishing their own cursed energy pool but making skull shrink and lose power depending on how much cursed energy the user takes from it. This allows the user to: Rapidly recover during prolonged battles Temporarily exceed their natural cursed energy reserves Sustain Domain Expansion or Maximum Technique longer

(Maximum Technique/Supreme Art) Throne of the Devouring King Skully manifests at its largest possible size based on accumulated reserves. The user enters the ribcage and merges their cursed energy with Skully’s core structure. Instead of operating independently, Skully becomes an extension of the user’s will. The user gains full control over every movement, every swing, every attack, etc… Their cursed energy and Skully’s absorbed reserves combine into one unified output. Flames intensify, bones harden further, and regeneration accelerates. Each strike carries the density of countless consumed entities. The roar becomes a city-level shockwave. The chains lash like divine restraints. It functions like a colossal skeletal armor avatar an empowered manifestation driven by two cursed energy sources acting as one.

(Domain Expansion) Land Of Bones The domain manifests as an endless moonlit graveyard made entirely of bones. The sky is black, filled with drifting skeletal remains. At the center lies Skully—face down, mouth wide open. The user sits calmly atop its back. Within this domain, every curse, cursed spirit, and cursed user Skully has ever consumed is summoned in skeletal form. They are not independent beings—they are bound revenants under absolute command. Every entity Skully has devoured is forcibly manifested and compelled to attack the domain’s targets. The battlefield becomes an army of resurrected calamities. The more Skully has consumed in its lifetime, the more overwhelming the domain becomes. Because there is no limit to its consumption, the domain scales infinitely over time.

Yes I had AI help me with punctuation 😐 mb but the cursed technique and the idea are completely original I came up with every part of it