Secret - Japanese & Chinese Sub - Megurine Luka - Meaning

The song is actually about becoming what other's want you to be in order to be in with the cool kids.
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Luka begins to become what they want her to be. After a while they asked her to do a crime and she accepts. They approve of her after she did it but what she  did (crime), haunts her. She begins to question if this she is who she is suppose to be.  She  tries to gain  her true self again but what she did follows her around and sticks with her. But in the end she is just their puppet.

Lyrics

I don't know if I'm a boy

I don't know if I'm a girl

I don't know why I was born

I don't know who's my mother

I don't know how I got alone

I don't know how I got mad

I don't know how I got mad

I don't know think I should get back

Tell me now that you really like the show

Tell me now that you really want to get high

Tell me now that you really like my style, oh

Tell u now that u are to commit a crime

U want this

Tell me how you want it to be

My mind, heart is broken

No one else

But u was going to understand my way

But from the day I found you babe

U falling into me

Tell me now that you really like the show

Tell me now that you really want to get high

Tell me now that you really like my style, oh

Tell u now that u are to commit a crime

U want this

Tell me how u want it to be

I don't know if I'm a boy

I don't know if I'm a girl

I don't know why I was born

I don't know who my mother is

I don't know how I got alone

I don't know how I got mad

I don't know how I got mad

I don't know think I should get back

I don't know if I am a boy

I don't know if I am a girl

I don't know why I was born

I don't know who my mother is

I don't know how I got alone

I don't know how I got mad

I don't know how I got mad

I don't know think I should get back

Tell me now that you really like the show

Tell me now that you really want to get high

Tell me now that you really like my style, oh

Tell u now that u are to commit a crime

U want this

Tell me how u want it to be

I don't know if I'm a boy

I don't know if I'm a girl

I don't know why I was born

I don't know who my mother is

I don't know how I got alone

I don't know how I got mad

I don't know how I got mad

I don't know think I should get back