Alright my guys! Here comes a suspected 'Challenge' by our good friend SkyKing01 as such the next two chapters will be a duel submission of two Zanpakuto's.
This is the first requested zanpakuto and my guy, I hope this weapon is to your liking as I did my best to use what you submitted, also I decided to use a different concept for the Zanpakuto Spirit as I believe it fits the theme much more than a Draconic Turtle.
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Name: Jüryoku.
Translation: Gravity.
Weapon Classification: Odachi.
Type: Kido.
Subtype: Conceptual(Gravity).
Base Appearance: The Base Large Odachi Blade, not much is different from it to other bladed weapons other than a deep purple grip and the hilt is a design of what appears to be a classic design of an atom.
Shikai Command: "Crush and Eliminate"
Shikai Activation Design: The User is enveloped in a capsule like purple energy dome exuded from the blade which pulsates for a few minutes before dissipating harmlessly revealing the weapons new form.
Shikai Appearance: The Weapon now takes the form of an ancient Nordic battle axe with a pitch black color scream and some etched in designs indicating it's primary Shikai classification.
Spirit Appearance: Jur takes the form of a pale white skinned older man wearing a planetarium jumpsuit and a baseball cap, he has bleach white hair and massive black bags underneath his eyes and is often seen with hands inside his jumpsuits pockets.
Spirit Personality: Jur is incredibly nihilistic believing anything and everything is ultimately pointless to the expanse of space, he believes humans only nest to stave off the inevitable demise and to make themselves feel less lonely, doesn't even hold much emotional tie or respect to the user but unlike most, isn't that caring if they know his full power or not.
Shikai Abilities: Jur grants the user an application to the concept of gravity, while having an unlimited use and control over their own personal gravity which can also use on others in a limited range.
The user can manipulate their own space of gravity allowing them to initiate a form of self sustained levitation which can last indefinitely but it's not a form of flight as the user can only keep them in place in the air and passively move themselves up to 5 feet before losing grip of their control and fall.
The user can also manipulate themselves to be able to stick to surfaces that would normally be impossible to stick without physical assistance like standing and walking on walls and ceilings.
The user can also manipulate their own weight of gravity making themselves appear to be much heavier or much lighter than they are actually, making them heavy enough to not budge if a physical force strikes them or light enough to jump around like they were on the moon.
Lastly the user can construct a barrier of pure gravitational energy which is transparent aka non physical but it's seen to be the perfect defense to change the trajectory to all projectiles causing them to be turned away from the user to hit different targets, it takes concentration to even deflect these projectiles to hit specific targets.
Bankai Name: Jüryoku o funsai suru
Bankai Translation: Crushing Gravitational Weight.
Bankai Release Command:(Optional) None.
Bankai Activation Design: The Battle Axe will unleash a shockwave of pure gravitational energy causing the ground to crack when it does but other than that, doesn't show much change as it's form doesn't change except that it's now radiating dark purple energy.
Bankai Design: No Change to the physical form except that it now radiates dark oppressive purple energy around the weapon, that's the only indication that it's in use.
Bankai Spirit Appearance: No Change.
Bankai Spirit Personality: No Change.
Bankai Abilities: The Users ability in gravitational manipulation is increased to a level that is on par with even some of the soul societies strongest in history even being compared to one of the original 13 Court Guard Captains.
The Users control and power over gravity manipulation is also increased to a major degree that would be very difficult to overcome as well as near impossible degree of damage that the user can inflict upon others.
The user can manipulate the gravity of their fists/weapon increasing their weight which then can unleash major physical damage to organic and inorganic targets like they were just paper and sand, the user can exert enough strength to crush a large radius of the battlefield easily.
The user can also unleash a center of gravity on a precise location to increase that locations gravity to degrees that can't be handled by much of anyone, increasing the weight of gravity to crush the bones into jelly or decreasing the weight to achieve a degree of zero gravity, only someone physically powerful and experienced could essentially fight even in the conditions brought by the user.
The user can also unleash waves of gravitational energy from the weapon which can knock back squads of enemies easily, this is by far the most non lethal technique the user possesses as it only pushes back enemies away from the user, not intentionally damaging them, more of the defensive side of techniques.
The user is now capable of condensing the gravitational energy to fire into a form of a plasma cannon which can effortlessly rip apart anyone in the cannons range or radius of the damage.
And the most powerful technique that the user is capable of is creating 12 meteor like objects made from pure gravitational energy and the size of two large boulders and can be launched one at a time or a burst style attack causing immense destruction in a large radius, the damage capable is strong enough to wipe out a natural Vasto Lorde instantly.
However once this technique is used, the user is removed out of Bankai since a lot of their reishi is depleted to near death and can't activate or talk to the zanpakuto due to the large amount of reishi being lost, the user needs three days at least to recover.