I'm confused, Seto and Mirror Seto?

[QueenNekoRin]

So I've noticed that there are mentions of Seto and Mirror Seto being a split personality but in some posts there two different people? Could some please clear up any misunderstandings and explain their relationship and the differences between the two? Thank you it's greatly appreciated.

[Eff Efferson]

naja is the split personality, she is seto but she sealed off her memories when she became seto. when she passes out naja comes out in ova 3. 

mirror seto is her body double...  the thing that masquerades as seto when she is off doing whatever she wants to do.

[antvasima]

How exactly did Naja become Seto btw?

[Eff Efferson]

i have 0 idea. i have yet to come to any sort of section that explains the how yet just the one that confirms it

[antvasima]

Okay.