Shikai Release Command: Kurayami o shōhi (暗闇を消費 ~ Consume the darkness)
Shikai Appearance: This weapon looks almost like a normal sword, except for one obvious thing. The blade of the sword is covered in an almost fog-like miasma of shadow. Or at least, it is whilst there is pre-existing shadows around the area that are able to be used for his techniques. If there is not, the shikai lays dormant until such a time as there is another shadow for it to use for it's techniques.



Shikai Powers: This shikai gets sharper the more shadows there are surrounding it. As such, he gains a +1 to weaponry at any time there's shadows nearby. This ability does not manifest in areas in the dark as there's no light to cast the jutsu.
Shikai Abilities:

Name: Yoru no manto (Cloak of Night ~ 夜のマント)
Type: Defense
Rank: Master
Range: Self
Duration: 8 posts (Or until broken)
Cooldown: 1.5 x duration
Description: By concentrating his own shadow around him, he stretches it out like a cloak, covering himself from head to toe. This cloak blocks all techniques below Advanced. It takes 2 advanced level attacks or 1 master level attack to break this technique.

Name: Yakan-mai (Night Sheet ~ 夜間枚)
Type: Supplementary
Rank: Intermediate
Range: Self
Duration: 6 posts
Cooldown: 8 posts
Description: Allowing his spiritual energy to consume his body, he blends into the shadows perfectly. Whilst this technique is active, he is unable to be seen as long as he doesn't use an offensive technique over Intermediate level. Furthermore, people are unable to detect him unless they have a perception of Adept or higher.

Name: Koi ha kōshō (Dark Blade Arsenal ~ 濃い刃工廠)
Type: Offense
Rank: Intermediate
Range: 30 meters
Duration: Instant
Cooldown: 3 posts
Description: Shattering an object's shadow, he turns the shadow palpable and fires them forwards his opponents at high speed (25 m/s). The shadows stab people the same way a sword with Weaponry intermediate would, able to pierce through a person's body if they're unprepared. However, due to the required size of the blades, they are made of a meter of shadow each (for example, at high noon Art's shadow is 2 meters long, so he can make two blades).

Bankai Release Command: Yoruaruku (Walk the night ~ 夜歩く)
Bankai Appearance: This bankai technically does not have an appearance. Rather, both Artemis and Yamino disappear when she goes into her bankai form. At least, that's the way it looks. As it turns out, he's turned into a shadow instead. He is able to move across flat surfaces undetected, seen only as a shadow.
Bankai Powers: There are two integral powers of this bankai. The first is that people are unable to harm him unless they have the skill they wish to use against him the same rank or higher as his bond with Yamino (e.g. if he's got master bond, then the opponent could only hurt him with master of higher techniques / weapons). Furthermore, he is able to replicate someone's body with their shadow. If he stabs their shadow, he stabs them. This is thus the perfect stealth technique.

Name: Kanmandageki (Tidal Flow Hit ~ 干満打撃)
Type: Offensive|Zanjutsu
Rank: Amateur
Range: The user's Blade
Duration: Instant
Cooldown: 2 posts
Description: Kanmandageki is a basic technique used by practitioners of Zanjutsu. Kanmandageki is a powerful sword swing with the blunt side of the blade, designed to daze and confuse individual the Practitioner wishes not to inflict serious harm upon.

Name: Bakudō #21: Sekienton (Red Smoke Escape ~ 赤煙遁)  
Type: Supplementary|Bakudō
Rank: Apprentice
Range: 10 metres
Duration: 2 posts
Cooldown: 6 posts
Description: Sekienton is a basic Bakudō technique, designed to hide the movements of the user, either to augment an attack or to aid in escape. The Shinigami performs this technique but pointing their palms downwards towards their feet and speaking the name aloud. Their hands will produce a burst of light red smoke, which will rapidly expand and cover an area of roughly ten metres. This smoke shall last for two posts.
Description:

Name: Fuuton Hokousha (Wind Pedestrian ~ 風遁 歩行者)
Type: Supplementary|Hohō
Rank: Novice
Range: The base of the user's feet.
Duration: Unlimited
Cooldown: None
Description: Fuuton Hokousha is the art of walking on the air. It allows the Shinigami to walk on the air by creating and sustaining tiny platforms of Reiryoku at their feet. By doing this, the Shinigami can walk through the air as though it were solid. The Shinigami can also use this to regain his footing after being knocked flying.