Wrote a review on this, here it is:
https://terrenceswiff.wordpress.com/2016/10/05/wizards-soul-holy-war-of-love/
Wizard's Soul is a very experimental work. It's clear that it is just by reading it but the author's comments support that claim. Therefore, it has a strange premise that you need to suspend your disbelief for, but if you do you'll find an incredibly interesting manga. Aki Eda approached card games, which I honestly don't like at all, in a way that explained to me what there was to like about them and subsequently made me interested in those games. Furthermore, the main character is quite interesting. She has good reasons for withholding shame from one person, but letting a few close others know about it, and her ruthlessness in pursuit of a practical, happy ending is quite awesome. It's a thrilling card game manga, and a funny romance -- the male love interest starts becoming attracted to the protagonist for reasons very unusual to romance. It's funny and kinda cool. I like the series a lot and consider it one of my favorites. This long review details precisely why. Give the series a chance, you may find it to be as enjoyable as I did, or perhaps even more.