Soulbow kensai: Mind Arrow Sig weapon?

[2xMachina]

Wondering if a Soulbow Kensai can have the Mind Arrow as the Sig Weapon?

Also, how does it interact with (Greater) Multishot, where you conjure up to 8 Mind arrows and fire them at once? Would you use the Natural Attack thing and use 180% Xp to enchant them all? Or say it's the same Mind Arrow?

[Yuki Akuma]

Mind Arrow isn't a weapon.

Conjuring a Mind Arrow is a free action, so yes, you can conjure up several at once for stuff like Manyshot.

[Last Laugh]

I would say yes, Mind Arrows qualify for feats such as weapon focus, Any powers or spells that upgrade weapons can be used on your mind blade (I'm gonna call this a typo and would change it to mind arrow give the context)