[Js2756]

Originally Posted by Grenthal

Just finished the game - got some question though.. why does Shiki (the evil one) / Roa look different in main route (Aruceid / Ciel) than in back routes (Hisui, Akiha, Kohaku)?. Any clues ?

Spoiler:

Probably because the the real Tohno Shiki is possessed by Roa in Arc's and Ciel's storyline, whereas there is no indication that he has been possessed by Roa in the Dark Side storylines (maybe in Akiha's arc it is mentioned, but I don't remember all the details).