Welcome to the Katie and Sadie club.
This might be a little unnecessary, but I wish that this club would not be reported as a duplicate.
You see, this is not a tagahanga club or either Katie or Sadie, or Katie and Sadie's friendship, like the other two clubs which can be found when searching similar keywords. This is a club for Katie X Sadie, meaning Katie and Sadie as a couple.
Yuri, slash, lesbians, I don't care what you call them, just sumali if you like Katie and Sadie as a couple.

If you do not like same-sex couples, or KatieXsadie in general, I suggest that you leave. Please do not bash the pairing...