When reading the first chapters, you think it's the story of a girl in trouble and get saved by her hero and they live happily ever after. Which is surprisingly WRONG in fact it's beyond your expectations, the heroine of this Manga isn't your typical heroine. She's more then just a heroine, even how tomboyish, stubborn , insecure and scared she is , she overcomes any problem her path meets in this oldest Era. Not only the main characters are the heroes but also side characters that even have the smallest role.
The surprising turns in this story makes you keep reading and makes you travel through many genres : from war to romance, from tragedy to fantasy in a historical theme and so on.
The art may be a little off, but the story is so nice and good that you look through that all.

Red River is one the best historical stories there's been made so far. It's absolutely a recommendation to read other stories by this fantastic author.