A very fun manga, a great start for the author of Sousei no Onmyouji. The characters are very good, very charismatic and have a great growth throughout the story. This is what makes manga so good to follow, the charisma and the growth in relationships between them is something very nice to see. The story is amazingly good. Starting slowly but progressively getting better and more epic. Full of good tense and funny moments, but it's a bit episodic that impairs the feeling of progress. That said, it has a great ending closing the growth and relationship of each character. The protagonist, Sakura Ichiko, is very charismatic. Sheis have Strong a personality, in addition to being that grows the most throughout history.
Her growth is something very nice to see, especially when seeing the change in how she interacts with the other characters.

The art is ok, but it has evolved a lot throughout history. At the end of it, it's very beautiful and still gives a lot of power to the epic scenes of the final arc.

My only criticism would be that some arcs are boring (from Nadeshiko) or have several chapters that look like stuffed with sausage.