According to Douban Movie Network, Sosuke is the hero in Jin Yuji on the Cliff. Sosuke has always loved Ponyo deeply, and has always been consistent with Ponyo. Sosuke won't change his mind. Sosuke has a strong relationship with Ponyo.
Jin Yuji on the Cliff was produced by Studio Ghibli. The film mainly tells the story that Ponyo, a mermaid, was stuck in a bottle and rescued by the human teenager Sosuke, so Ponyo fell in love with Sosuke. During this period, she longed to be a real human being. After all kinds of efforts, she finally walked with the human boy.