This manga has recently been published (Referring to English Version), but opinions can already be made after volume 1. As you know, Youkai Navi Luna (Fairy Navigator Runa) is the comic version of a novel. The story really is going smoothly and the art is what you'd call "kawaii". x3
Anyway, the character personalities really fit into the story. For example, Runa Rindo is your typical airhead, but an aggressive (when fighting), yet a forgiving silver-haired "fairy" when she...
Well, I'll leave that out for you to find out about her powers.
Even the outfits of the characters fit with with the story. When you see Runa's ribbon or pendant (Referring to cover, so no, this is not a spoiler. ;] ), there is a connection with the story.
This manga has a wonderful story. For the ones that already read the novel, I'm sure you agree. So if you're a fan of the novel, you'll already gain interest in the manga just by reading the first volume.