Responses
That would have been the case if rin wasn't Kaoru's fated pair but since he is his fated pair he's reacting. Yuka and Taiga are fated pairs I think if they were to meet each other he would react to Taiga however not sure if he would be okay after Kaoru breaks off the pair. I think breaking off the pair causes some psychological affect on the omega. I haven't more like cant read the raws so I wouldn't know for sure.
The only thing that haunted my mind is.. Kaoru is already form a bond with Yuka but he still can react to other people? I always thought, after forming a bond, you can only react to your bond partner..
But i already ready raws anyway and i love the ending