Dawn & Dusk

Ok, before I start, I need to explain that I have a zanpaktou that is actually 2 swords.
I call them a 'Gemini type' of sword to save some confusion.
Before you ask, each sword is only half the strength of a normal Zanpaktou.

Name: Dawn Fang and Dusk Fang
(can someone translate that for me?)

Manifestation: Each one appears as a young lady, tall and thin, and they have cat ears
Dawn has bright, golden eyes and blond hair
Dusk has dark blue eyes and black hair
They wear tight clothes that resemble fur, shirt and short pants.

Release Phrase: Pounce Ladies

Family: Gemini (Latin for twin)

Level: They are only at the shikai level.

Sealed Zanpaktou: Due to its own effect, I have two swords instead of one. Also, while not perminant, it would be in it's shikai mode most of the time. They would look like the standard issue.

Shikai: This is the only picture I could fine that looks anything like the image in my head

It would look like this, but the hilt would be completely black, worked with silver.
The pommel of the swords would each be embedded with a gem.
Dawn would have a Glowing yellow Topaz, and Dusk would have a Deep blue Sapphire.

Shikai Ability:
Dawn is a defencive sword. Dawn is indestructable, no matter how hard you try, you cannot damage her in any way; be it the hottest fire, the heaviest hammer, or a millenia of rust.
Dusk is an offencive sword, her only power is the ability to cut through things. This power can be used in quick succession, but uses exponentially more energy to use the harder the target is.
If used on targets that should be near unbreakable, it would still cut through, but the effort would probably drain me of all my energy and kill me

If I ever achieve Bankai...
Bankai: They would turn into cats. Their claws and teeth would be harder than diamonds.
Dawn would turn into a wild black cat with eyes like the gem in her hilt.
Dusk would turn into a wild cat with eyes like the gem in her hilt.
Bankai Ability: They would be able to think and fight seperately, without help.
They would have incredible reflexes, and both be extremely fast and flexible.
While in Bankai, no shikai abilities can be used.

Techniques:

Shikai Level
Name: Dawn's first light.
Effect: Dawn is indestructible. A side effect of this is that Dawn is heavier than a normal sword, making it slower to swing and taking more energy to wield over time.
Duration: Passive ability

Name: Dusk's fading light.
Effect: Dusk can cut through things. The strength and thickness determine how much energy it will take to cut through each individual target. Dusk can cut through targets that most zanpaktou's couldn't cut at all. Targets that strong will take a lot of energy to cut through. Also, after repetitive use of this power, Dusk will get tired and each cut will take more and more energy to use.
Cooldown: This move can be used without a cooldown, but it drains extra energy.

Name: Twilight
Effect: I touch together the gems in Dawn and Dusk, energy from both swords runs into me via the gems, and both of the gems flash. All my energy is compressed and channeled throughout my body. Both swords become lighter, and enable me to move better. I can run faster, jump higher, react quicker and swing both swords with ease. After it ends, I run out of energy and slow to nearly half my normal speed and can bearly lift my swords. This is a last ditch effort to beat my enemies. It's a do or die attempt to win the fight.
Duration and Cooldown: It would last for 3 posts, and have a 20 post cooldown.

Comon guys, can someone please either approve this or tell me what needs fixing...