Board Thread:Spoilers!/@comment-4453062-20160217065238/@comment-5899967-20160224132235

ChocolatEyes613 wrote: Chameleon-Guy wrote: I was hoping to see more of Ruby and Mulan, not just in 5x18 honestly, I thought they said they wanted to develop their romantic story, you can't do that in 2 episodes. Every other romantic relationship, except the core four, were developed within two episodes.

Ruby may be a minor character, but she isn't an arc exclusive character, they had all the time.