Notes

Tohka Tsugikuni's Updated Shard Breathing
Nichirin: SSS OWL used by Arima
Derives Directly From Moon
Switches Between Ranged and Close Quarters

Close:
First Form, Blink: Basically a teleport, slicing downwards if contact is made.
Second Form, Flurry: Blink, but instead of a single slice, the user barrages with multiple sound-speed slices that impale with shards.
Third Form, Shard Claws: Claws made of shards rise from the ground, ripping and tearing anything in their way.

Range:
Fourth Form, Missile Shard: Shoot a singular Missile-Shaped shard forwards. If it breaks through contact, it explodes into glass bullets.
Fifth Form, Missile Maelstrom: Missile Shard, But even bigger. It's breaks create smaller Missile Shards.
Sixth Form, Glass Rain: Tons of mist patches form. From the mist patches, around ten thousand shards are all thrown like minigun bullets.

Other:
Seventh Form, Demonic Art, Glass Mirrors: Stab the Nichirin into the ground, multiple shard mirrors form around a target. The mirrors counter all projectiles and send them back to the target with double the force.
Eighth Form, Demonic Art, Glass Heart: Stab the Nichirin into your opponent, as all of their organs turn into glass. Explode the glass organs, bursting their body inside out with crystallized glass shards.