When I allied Ophelia(in the new verion7.9), I found when I demand height from her, the number in ally list didn't decrease, and , if I told her nothing, the reply will be from miku——and a test shows I did't get height from miku. when I dissolve alliance with Ophelia, it don't work, I can still use the ally ui in side room. If I allied someone else, it will extend the fails in team battle and directly submit to the demand for height or card. Else, this time I can alse demand height from both Ophelia and my teammate now, althouth when I ask for height from Opehlia my teammate will answer, but in fact my teammate's height didn't decrease, so do the Operhlia. The height comes from mysterious power :)
And I alse wants to know how the ancient book works because I didn't seem to find it.