Lost Memory: An Ode to Ventus

What was my name again?

I know it starts with a "V".

Then there was an "A",

Or possibly an "E".

Why can't I remember?

My soul is incomplete.

Part of me was stolen;

A part I must defeat.

Him? A blind ambition?

The darkness of the heart?

He's the half that left me?

He's my other part?

I won't let him get away!

He hurt my closest friends!

I will fight with all my strength,

Until it truly ends.

Where am I? What is this place?

I know this boy, but not his face.

When I was lost, he gave me light.

In return, I'll help him fight.