This is a requested Zanpakuto by an Anonymous User so I hope this weapon pleased you dear specific reader.
This particular weapon is based off of Delsin Rowes use of the Smoke Conduit Powers from InFamous: Second Son.
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Name: Kemuri Michi.
Translation: Smoke Conduit.
Weapon Classification: Katana.
Type: Elemental.
Subtype: Fire.
Base Appearance: The Sword Itself seems like an ordinary mass produced katana, with a red grip, the only thing that makes this weapon unique is that the blade isn't a traditional metallic color, instead it's a murky gray color almost akin to smoke from fires.
Shikai Command: "Exude"
Shikai Activation Design: The Weapon exudes a massive burst of smoke which expands up to a maximum of 30 ft away from the user, anyone even the user that is caught within the smoke cloud would feel immense heat, not enough to cause any burns of damage but would feel hot within the smoke only for the smoke to clear in a few minutes exposing the user and the weapon.
Shikai Appearance: Kerumi takes the form of a pitch black color combat knife that seems to have a fade exuded aura of smoke coming out of the blade, the blade also has a serrated edge,
Spirit Appearance: The Spirit takes the form of a modern age like punk rock male, jeans, sneakers, a hoodie with a leather jacket over it, the spirit behaves incredibly similar to a modern age male but is seen rather conflicted, almost like light and darkness is often conflicting within the man's heart.
Spirit Personality: The Man is rather kind and considerate as most men his age would be in the human world, he wishes the help others but is also said to be petty and spiteful, screw with Kemuri then you'll be on his shit list, other then that, he tends to be conflicted with the grey morality in most decisions and is usually left not giving his input for the user.
Shikai Abilities: The Ability of the weapon is rather unique even for a fire type zanpakuto, the main input of Kemuri is the ability to manipulate the smoke and embers of fire instead of genuine fire like other fire type zanpakuto.
The User can manipulate this smoke to expand to a semi large radius to impede visual perception increasing stealth properties of the user for quick stealth like damage, the smoke also induces a strong heat like effect that slowly burns the targets within, the user and allies of the user is protected from this Passive effect of the smoke cloak.
The user also has a unique ability of converting their whole body into a form of wispy smoke which allows them to quickly travel in quick bursts, while an ineffective way to travel long distances, it's a most valued ability for surprise attacks and dodging enemy fire.
The User can also coat the knife in ash and use it like a traditional weapon which can inflict heat and burning damage to the normal slashing damage, this effect is more of a passive extension of the weapon.
Bankai Name: Kazan funka no kemuri.
Bankai Translation: Smoke of a Volcanic Eruption.
Bankai Release Command:(Optional) None.
Bankai Activation Design: The User Stabs the knife into the ground which causes a massive eruption of smoke emerges from the ground into a massive column of smoke which reaches high in the sky before the smoke dissipates revealing the Bankai of Kazan.
Bankai Design: The Bankai Version is slightly different then the original Shikai as the knife is morphed into a machete like weapon with a solid black haze exuded off the weapon distorting it's perceptive shape from the human eye, the user also has a pair of pitch black gauntlets that seems to exude a similar black haze to the machete like weapon.
Bankai Spirit Appearance: No Change.
Bankai Spirit Personality: No Change.
Bankai Abilities: The user's ability in ember and smoke manipulation has increased immensely that even their abilities from Shikai is also greatly enhanced by x10 their original power.
Bankai also gives the user new and more powerful abilities such as smoke construct manipulation which allows the user to create smoke like weapons from the smoke exuded from the blade, the user can make anything from this smoke that can serve any purpose but the most usable effect is the smoke grenade which the user can lob grenades made from smoke towards targets which explodes, the smoke then clings onto the target which then hinders their movement immensely to even incapacitate them temporarily.
The user also enhances the travel effect of the smoke ability and the user now is capable of empowering themselves with smoke to dash to sonic speed which is capable of impacting targets for large force damage, this ability can also be used in conjunction with smoke like thrusters to fly for a short time.
In conjunction with the smoke dash ability, the user can unleash their strongest technique which is dashing and flying upwards then dropping downwards dealing massive damage in a relatively large radius capable of crushing even Adjuchas instantly in this range. This technique is referred to as the Orbital Drop after Ichigo Kurosaki witnessed it.