妹のコノハナサクヤビメは美人さんで、この方とともにニニギノミコトのところに嫁がされたのですが、イワ姫は醜かったので返品されたという、鬼灯の冷徹でやってたアレですね。
そりゃ富士山に嫉妬しますわなと(^^;)

The little sister, Konohanasakuyabime, was a beautiful girl, she and her elder sister were wed to Ninigi-no-Mikoto, but Princess Iwa was ugly, so she was returned, like in Hozuki's Coolheadedness.

Of course she'd be jealous of Mount Fuji. (^^;)