The legendary Monou siblings: Kotori and Fuuma.
I wanna to create brotherly and sisterly atmosphere here :D
Done in Faber Castell Pencil Color
I also uploaded this art in my Deviant Art: http://harumikoto.deviantart.com/art/Fan-Art-CLAMP-X-1999-Gomen-Kotori-378537559?q=gallery%3AHarumikoto%2F33674430&qo=4
Uploaded 30 January 2014