Shiki Ryougi (両儀 式)

After awaking from her coma, Shiki discovers that she can no longer feel the male Shiki's presence and assumes he died because of the accident. She also feels a detachment from her memories before the accident, and while she knows she is Shiki, she does not feel that she is. In the hopes of regaining herself and the dead Shiki, she puts on a cold facade that somewhat resembles the female Shiki's. Touko understands the sense of detachment Shiki feels, but considers the current Shiki a third, new personality.

(Source: Wikipedia)