Plot wise, the story seems to built up quite steadily well however I cannot stand how onmyouji have to be using somewhat like pokedex only that its one shikigami to one player(?). Well, it seems far from a typical onmyouji genre so I am not really sure if I like or dislike it, however I do like how the story is mainly focusing on friendship/betrayal/self doubts etc etc that we normally questioned ourselves in modern life. For this, I shall give the story 8/10. As for character development, it was really established in a really nice plot, so I would have to give a 10/10 for character.
As for the art, it seems a typical anime to me, not much star stellar cast that keep me in awe and for that, I give this art a 7/10. The ost of the songs was generally okay but it didnt ingrained in my heart. As for the voice acting, I will give this a 7/10. I kinda enjoyed this anime a lot so despite its flaw, I will be giving it a 9/10 for both enjoyment and overall.