It's confusing, but it's only the second chapter, and the underlying story seems like it's probably developed. It's just we as the readers haven't been given full details yet. Don't know why everyone seems to find it so strange? Most stories don't tell every detail of the world and characters at the start, but only reveal it gradually. Well, a lot depends on how the story is told from here, but I'm currently optimistic.
What we know right now:
Kamui somehow developed sacred/healing magic and is hiding it from the academy as a whole. We don't know whether he's going to make it look like Selene did the healing or not though, presumably we'd find out next chapter.