Board Thread:Off Topic/@comment-108.26.119.115-20170614223618/@comment-26882656-20170614224104

That is certainly a theory. You could also use that theory and say that he felt guilty about Summer's death and so he trained Ruby to be strong and skilled. And maybe why Ruby feels so attached to him, he stepped in when Summer left. Maybe that's also why Tai gave him that look.

But eh, we won't know until it's revealed.