How did Kirito's Illusion actually kill?


In Episode 19 - _The Lugru Corridor_ , Kirito and Leafa are blocked from
entering Lugru by Salamanders and are forced to fight with them. In the middle
of the fight, Yui tells Leafa to use all her magic to heal Kirito from the
damage of the incoming barrage of Fire Spells, while Kirito is chanting an
Ilusion Spell that Leafa taught him when they entered the corridor.

Kirito turns into _The Gleam Eyes_ from Sword Art Online and begins to kill
everyone (save one Salamander who Kirito then bribes with the loot he just
got, while another fled by diving into the lake, only to die).

Leafa explained previously that Spriggan's spells are mostly useless in
battle, and by definition Illusions shouldn't damage enemy players or even
kill them (unless they are intimidated and back off falling into an abyss of a
monster filled lake). If they could do damage, they'd technically be
summoning/conjuring.

Kirito isn't a hacker who made Leafa, Yui and all the Slamanders think that a
giant beast was throwing them about, when really he was just stabbing them.
And in Sword Art Online, Kirito didn't have any sort of summoning abilities
(at least in the anime). So how did Kirito's Illusion pick up, throw and kill
the Salamanders?




Rather than an illusion magic, it seems what Kirito used is a transformation
magic instead. The following is based from the 3rd novel.

> "Well, I somehow remember the battle earlier. I used the magic Yui
> suggested, and became very big. Since my sword disappeared, I had to use my
> hands..."
>
> "Also with the teeth bite yo~"
>
> On Lyfa's shoulder, Yui added with pleasure.

Remember that Yui is an AI from Aincrad and that upon arriving at the Alfheim
world, Kirito noticed that Alfheim is based on Aincrad, including the skill
sets and player data.

> In the skills window, I saw several skills side by side. These skills
> included: 1-H Swords, Unarmed Skills, and Parry, the Combat skills, as well
> as Fishing, a support skill, but the proficiency values were abnormal. More
> were just about 900, and some had even reached 1,000 and had a tag denoting
> MASTERY.

Later when asking Yui, Yui confirmed that.

> "It seems this world is based on a copy of the Sword Art Online server."

This explains how Kirito can turn into The Gleam Eyes. Since it is a copy of
the SAO, some resource file might be still left intact. While it is not
normally accessible by the players, with Yui giving assist, it is possible
that she hacked the system a bit and granted access to Kirito to transform
into The Gleam Eyes. This wasn't explicitly mentioned in the novel, however.




Rather than an illusion magic, it seems what Kirito used is a transformation
magic instead. The following is based from the 3rd novel.

> "Well, I somehow remember the battle earlier. I used the magic Yui
> suggested, and became very big. Since my sword disappeared, I had to use my
> hands..."
>
> "Also with the teeth bite yo~"
>
> On Lyfa's shoulder, Yui added with pleasure.

Remember that Yui is an AI from Aincrad and that upon arriving at the Alfheim
world, Kirito noticed that Alfheim is based on Aincrad, including the skill
sets and player data.

> In the skills window, I saw several skills side by side. These skills
> included: 1-H Swords, Unarmed Skills, and Parry, the Combat skills, as well
> as Fishing, a support skill, but the proficiency values were abnormal. More
> were just about 900, and some had even reached 1,000 and had a tag denoting
> MASTERY.

Later when asking Yui, Yui confirmed that.

> "It seems this world is based on a copy of the Sword Art Online server."

This explains how Kirito can turn into The Gleam Eyes. Since it is a copy of
the SAO, some resource file might be still left intact. While it is not
normally accessible by the players, with Yui giving assist, it is possible
that she hacked the system a bit and granted access to Kirito to transform
into The Gleam Eyes. This wasn't explicitly mentioned in the novel, however.

