Mahoutsukai Syd & Lid

From Storm in Heaven:

Magicians, people with magical powers that have caused their kind to be hated and feared throughout the centuries. This manga contains their tales – of magic for both good and evil, the struggle to fit into society, and a dark past that haunts them both.

The series includes:

1) Romanesque Variee

2) Mystic Variee

3) Classical Variee

4) Sweet Variee

5) Silouette Variee

6) Crescent Variee

7) Secret Variee

8) Fantastic Variee

9) Nostalgic Variee