Notes

* Song basis adjustments. Previously i used Trouble Busters (Smile), Suki desu ga Suki desu ka (Pure), and Zurui yo Magnetic Today (Cool) in Hard difficulty for the basis. After some thinking and inputs from other redditors, i've decided to change it into Music Start (Smile), Junai Lens (Pure), and Loveless World (Cool). All in Expert difficulty.

* I also changed the leader bonus. Previously i assume it will be Smile Princess, Pure Angel, and Cool Empress leader respectively, without a friend bonus. I realized this is quite unfair to the cards that have leader skill other than those three, and in practice you will use a friend bonus to strengthen your party. So i changed it to solve that problem. More on that in the next bullet point.

* Introducing 2 type of points : Common and Optimal. (credit to /u/ReverentRevenant who suggested this idea)

- Common Point is the value of the card when it use its own leader skill bonus + the most optimal guest center. This is the basis i am using for ordering this guide because this is what most people will encounter themselves with. Usually people only have that particular UR as their center and want to know how to get the most out of it via guest center.

- Optimal Point is the value of the card when it is organized in such way that its power will shine the most. This is useful is you happens to have more than 1 UR with different leader skills so you can min-max thing to the fullest. This point is just for information purposes, not the basis i am using for the tier list. Some cards have the optimal point the same as their common point. If that's the case then, well you are lucky to have such easy-to-build-around card :D

* As per point no. 3, i'm adding/changing the table to reflect this update. I also added the Leader Skill abbreviation to the Important Notes Section

* In correspond to those points above, the card orders are changed. I won't list this here because it's massive. You can check it yourself below ;)

* Some of the tier also changed. Plus 2 new card has been added. Here are the details :

Valentine v2 Nozomi has been promoted to Tier 1 Smile
Magician Maki, Spring Hanayo, and Waitress Eli has been promoted to Tier 2 Smile
China Dress Nico and SLG Eli has been demoted to Tier 3 Smile
Added Fairy Nico to Tier 1 Pure KLAB/Volvo/Rito plz nerf
Spring Rin and Valentine Maki has been promoted to Tier 2 Pure
Maid Umi has been demoted to Tier 3 Pure
Added Fairy Rin to Tier 2 Cool
Constellation Rin, Christmas Nozomi, and Police Kotori has been promoted to Tier 2 Cool
Bride Eli, Mermaid Maki and Halloween Nozomi has been demoted to Tier 3 Cool

* Temporarily removed God Tier SR and Great Event SR table. These will be included in my next guide, SR Tier list. I expect to be able to post it sometime after Nozomi Event ended on EN, but before Eli Event started.