Board Thread:Questions and Answers/@comment-223.27.94.3-20130923045444/@comment-24027950-20131009023037

I don't think we can be certain that Nagi defeated Ruka yet, only based on the events of "Heaven is a Place on Earth." It sure would seem that way, but they could also tied for example. I don't think Ruka walked away though because on Volume 99 or the extra 11 minutes of the movie, it's shown how Nagi invited Ruka to go with them too but she couldn't due to having a concert soon, which explains her absence in the whole movie/plot.

Even though it's hinted on "Hayate no Gotoku! Cuties" that Ruka probably moved out of the Violet Mansion, it still doesn't mean she bailed out. Hayate and Hinagiku are following Dr. Kurosu to make Ruka "happy" and I honestly doubt they are going to fail... So if she's happy there's really no reason to just walk away!

Maybe she's just really busy with her idol life... I don't really... I'm just guessing