Raison d'Etre

Few days ago I've been asked (again!) about the relationships of my imaginary Duette. I've spent about an hour, thinking silently, and then...

Then I drew this.

Click 'full view' to see the story - I know it's too short and misty, yet... I feel it's right.

P.S.:
The right spelling of the title is "raison d’être". These words mean reason to be. I believe you understand what I mean...

Hope you enjoy.)))