Yukianesa (ユキアネサ, Snow Woman) When sealed, Yukianesa looks like a normal katana with the exception of the guard, which is in the shape of a strange silver diamond shape with two protrusions aimed toward the blade. Its hilt is green, and sheath light blue. The sheath completely dissolves when he draws his sword. The sword is somewhat longer than most Zanpakutō, at about 1.4 meters long. Yukianesa is the strongest of all ice-element Zanpakutō in Soul Society. As such, Jin doesn't need water to be present in order for him to use its abilities. Jin's control over Yukianesa's power is great enough to use some of its Bankai techniques while in Shikai, though it can backfire and affect him as well. The difference in ability between Yukianesa's Shikai and Bankai is very small; the true difference lies in the quantities of ice each form can create, with the Shikai only being able to create comparatively small quantities.
Shikai: Yukianesa's release command is "Sit Upon the Frozen Heavens" (霜天に坐せ, sōten ni zase). In its Shikai, Yukianesa extends slightly in length, and gains a crescent-shaped blade attached to its hilt by a long metal chain, which can extend greatly, if necessary, by force of will. The chain itself can be used for attack, or to entangle a target. Yukianesa’s blade seems to be made of a special ice that never melts.
- Shikai Special Ability: Yukianesa grants Jin the ability to stop molecules and restrict a substance's movement. This includes the ability to generate ice and snow, which is done by stopping the movement of water molecules in the air and then manipulating them from a liquid or gas state state to form a solid. Using it on a person will separate their senses from their surroundings and slow down their movement. Because even the opponent's thoughts are slowed down they may not even realize the change. His slashes create an immense amount of spiritual power which overflows from the tip of the blade, creating a flow of ice shaped like a veil. The ice flies towards opponents and instantly freezes anything it touches. Yukianesa can create multiple ice waves to attack an opponent from various angles. Jin can also direct his slashes towards the ground and form a wave of ice, which rushes over his opponents, overwhelming and freezing them. The chain-blade also freezes anything Jin traps with it. The power it expels is so overwhelming that in Soul Society (where Jin is not placed under a limiter), its mere release affects the weather within the immediate vicinity, creating a thunderstorm or blizzard.
- Tensō Jūrin (天相従臨, Subjugation of the Heavens): One of Yukianesa's basic powers, as well as its strongest. It allows him to control the weather in the immediate vicinity, or more specifically, the water in the surrounding atmosphere. The ability is usable in both Shikai and Bankai. However, Jin states that this aspect of his powers is too dangerous, and that he doesn't like to use it in Bankai mode, as he is unsure of whether or not he could keep it from killing everyone in the vicinity.
- Shinkū Tasō Hyōheki (真空多層氷壁, Multilayer Vacuum Ice Wall): To fight effectively despite the small quantities of ice his Yukianesa can create, Jin has developed this method of ice creation. By creating layers of ice, and then by leaving small pockets of air within them, Jin can create a multi-layer ice wall with several empty layers. This enables the little ice Yukianesa can create to be able to withstand fire attacks with little damage. Jin can then manipulate this ice to use as a sword.
Shinkū no Kōri no Yaiba (真空の氷の刃, Vacuum Ice Blade): This ability allows Jin to control his Shinkū Tasō Hyōheki technique and manipulate the ice by gathering it at the tip of Yukianesa before expelling it forward, creating a large blade of ice which impales his opponent.
- Ryōjin Hyōheki (綾陣氷壁, Woven-Ice Wall): Jin generates a protective wall of ice by finely weaving threads of ice together.
- Rokui Hyōketsujin (六衣氷結陣, Six-Clothed Ice Binding-Array): Jin can lay down a trap by placing five snowflake-shaped ice crystals on the ground in a pentagonal formation. When an opponent steps into the trap, each snowflake sends a line of ice towards them. The space within the pentagon is then encased in a large pillar of ice, trapping the opponent.
- Suishou Kessei (水晶結成, Crystal Formation): By either piercing an enemy, or piercing the ground with his sword, Jin creates a stalagmite of ice that encases an opponent and freezes them to the muscle tissue.
Bankai:
Yukiwoitadaitashimpu (雪を頂いた新婦, Snow-Crowned Bride): Jin's Bankai causes snow to flow from the Zanpakutou onto Jin, which forms onto his body in the shape of flowing white robes. The snow continues forming atop his head, giving him long white hair and fox ears. The snow forms on his backside as well, which forms nine fluffy tails. These new snow tails are movable, and can be used as an extension of himself to aid in battle. Jin's hands gain a pair of gems on their palms, and one appears in the middle of his forehead as well.
- Bankai Special Ability: Much like his Shikai, Jin can freeze objects and areas by forcing the stagnation of molecules, though the radius and strength of the freezing is greater. Because the Bankai's freezing ability is much greater, Jin can swing his tail around as a weapon to try and freeze objects. Yukiwoitadaitashimpu's Bankai lets Jin access several additional techniques.
- Bankai Regeneration: Jin states that as long as there is water in the air, his Bankai can be revived indefinitely.
- Zanhyō Ningyō (残氷人形, Lingering Ice Puppet/Doll): Upon activating his Bankai, Jin is able to create and shape a large amount of ice into his exact likeness. It is very life-like, as it can appear to bleed. He stated that he can usually only trick an opponent once with it, so he usually saves it for towards the end of a battle.
- Hasunesenka (蓮根霰花, Lotus Root Hail Flower): When Jin stabs his opponents, a huge burst of ice erupts from the point of contact between Yukiwoitadaitashimpu and the opponents, encasing and freezing them. Jin then proceeds to shatter the ice, and his opponent with it.
- Sennen Hyōrō (千年氷牢, Thousand Years' Ice Prison): Jin creates many ice pillars, which encircle him and his enemy. At his command (when he turns his sword 90 degrees counter-clockwise), these pillars then move towards the enemy, enveloping and crushing them. Though this technique is very powerful, Jin infers that it takes a considerable amount of time to prepare, and therefore the distraction of his enemy is crucial in successfully completing this attack.
- Hyōten Hyakkasō (氷天百華葬, Frozen Heaven Hundred Flower Funeral): This ability is an extension of Yukiwoitadaitashimpu's Tensō Jūrin power. However, because Jin dislikes using Tensō Jūrin while his Bankai is active, he rarely uses it. The ability opens up a huge hole in the clouds, through which a large amount of snow floats down onto his opponent. As the snow comes into contact with the opponent, ice flowers sprout all over their body, instantly trapping them in a pillar of ice. Jin claimed that when the last of the 100 petals falls, the life of the one who touched it will be over.
- Shikai Hyōketsu (四界氷結, Four World Freeze): In his matured Bankai, Jin can freeze all matter in front of him after four seconds of building up his power.
