[Soji]

Originally Posted by KiRa08o2

Wonder what happened. Onii-chan got hurt?

Well i do ask about this(more or less) few pag ago. So i just copy the answer that kuroishinigami give me.Just the part you ask.

Spoiler for just in case:

And to answer your second question, Shidou was hurt in the illustration from entering Yoshino's bounded field, and Kotori is not sure if her power can reach Shidou in the field. Furthermore, inside the bounded field, Shidou's body was pierced over and over again and he didn't die instantly like in vol 1. that's why she was worried about him in vol 2 and not in vol 1.

And just for more answer from his post.

Spoiler for just in case:

As for how the flame works, it basically burns all of Shidou body after he died and the ressurect him, just like phoenix' fire. Of course there's some limitation, but up till vol 2, all we know is just the power might not work inside some boundaries, possibly one created by spirits.