[kuroishinigami]

Hmmm, how should I explain Kurumi role... I'll write more once I got home, but for now, some info on Kotori.

Spoiler for Kotori:

- originally not a spirit, but was given power to control fire by someone 5 years before by someone who also sealed her memory regarding the incident.
- strongest spirit to date, but the more she use her power the more she lose control of herself as a human.
- caused shidou to suffer heavy injury back when her power run out of control 5 years earlier
- the flame that heas Shidou is actually her spirit armor power.
- supposed to be completely sealed 5years ago, but remember that there's a power connection between Shidou and the spirit he saved and the power might flow back to them if they're agitated.
- retained full power in end of vol 3 and her body become the same as spirit in vol 4
- resealed at the end of vol 4