Board Thread:General Discussion/@comment-87.102.2.235-20160720090052/@comment-5430952-20170109100704

I'd say Qrow sees Ruby as his chance to make amends for what befell Summer, something Tai clearly wants to avoid for it puts Ruby at risk of repeating Summer's folly. Hence I can see him joining Yang in the search for Ruby come Volume 5, not to mention butting heads with Qrow over what he's done next time they cross paths, if they do.