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When Kirito fights The Gleam Eyes this is the first time he uses his Dual
Wield ability which was the reason why he had a second sword commissioned by
Liz, after he killed the boss his HP was quite low.

Before he uses it he's hesitant in using it, was this because Dual Wielding
drains HP when active or was his hesitation more to do with the ability
becoming more widely known?


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2014-03-12T21:12:05.967
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2014-03-25T11:28:49.110
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question
sword-art-online
Does Dual Wield drain HP?


It was clear that Kirito was keeping his dual-wield ability a complete secret.
Nobody knew about it - not even Asuna. This was evidenced by the fact that
Asuna questioned Kirito about why he isn't using Liz's sword and suggested
that he was "hiding something" from her.

So Kirito hesitated because be knew that using his dual wield in front of
everyone would blow that secret wide open. But he had no choice. It was do or
die.

* * *

Getting back to the question, there is no evidence in the anime to suggest
that dual wielding drains HP. But you could infer other drawbacks such as
tying up both hands thus preventing the use of a shield.


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2014-03-12T21:16:45.817
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2014-03-12T21:31:09.753
2014-03-12T21:31:09.753
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answer


**In the novel, there is no mention about life stealing or something like
that.**

Here is all mentions about the Dual Blade skill

* * *

**During the fight with the 74th floor Boss - The Gleam Eyes**

> With the sword in my right hand, I blocked the demon’s blade as it came down
> from a flame-like trajectory. Then, I reached behind my back with my left
> hand and grabbed the handle of the new sword. I drew it and struck in one
> smooth movement.
>
> (...)
>
> This time, I crossed my two swords and blocked it completely. As its stance
> became unbalanced, I decided to break free from my defending streak and
> launched a combo attack.
>
> My right sword slashed horizontally towards the demon’s midsection.
>
> My left sword followed immediately to cut vertically into its body.
>
> (...)
>
> Right, left, then right again. I swung my swords as if the nerves in my
> brain were going into overdrive.
>
> (...)
>
> This was the extra skill that I had been hiding, «Dual Blades», and the
> technique I was using was its **high-class sword skill «Starburst Stream», a
> sixteen-hit combo attack**.
>
> (...)
>
> Faster, faster. The rhythm of my swings already exceeded **twice the normal
> speed** , but it still felt slow to my heightened senses. I continued my
> attack at a pace that seemed to overtake even the system’s assistance.
>
> (...)
>
> Most of the ten-plus extra skills that had been found up until now, «Katana»
> included, had at least ten people who used each of them. The only exceptions
> were my «Dual Blades» and one other man’s extra skill. These two were most
> likely limited to only one person, so they should be called «Unique Skill».
>
> (...)
>
> Since then, I only trained it when there was nobody around. Even after I
> nearly mastered it, I rarely used it against monsters unless it was an
> emergency.

**Fight agaist Heathcliff (in the stadium)**

> I twisted my body around right before reaching Heathcliff and swung the
> sword in my right hand upwards to the left. It was blocked by the cross-
> shaped shield and sent out a burst of sparks. But my attack was part of a
> two hit combo. Point one second after the first strike, my left sword slid
> in behind the shield. It was a **Dual Blades dash-type skill «Double
> Circular»**.
>
> (...)
>
> I just managed to guard by crossing my two swords. The powerful impact
> rattled my entire body and sent me flying back by several meters.

**After defeating the Skull Reaper, the last fight**

> Out of the ten unique skills, **«Dual Blades» is given to the player with
> the fastest reaction speed** (...)
>
> (...)
>
> I changed my attack pattern and activated **«The Eclipse», the highest level
> Dual Blades skill**. Like the tips of an enveloping corona, my swords sent
> twenty-seven consecutive attacks towards Kayaba—


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2014-03-25T11:28:49.110
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