Heartwarming / The Cat Returns

  • Haru discovering that Yuki is the stray kitten she fed a box of fish crackers to when she was a little girl, and then finding out that Prince Lune is going to marry her. Aww...
  • Muta's progression of his friendship with Haru, culminating in him explicitly stating that he'll back her up against the Cat King.
    Muta: I respect a woman who stands up for herself! Even if she does like to stick her nose in other people's business. So I, Renaldo Moon, will defend her.
  • Prince Lune has only a handful of lines before making his intentions to marry Yuki known, and Yuki herself had only been introduced a couple of scenes before that point. Still, you don't need to know that much about either of them to see how much they love each other.
http://tvtropes.org/pmwiki/pmwiki.php/Heartwarming/TheCatReturns