2011, Ghibli film about a girl who honour her father in the Korean war by waving ship signal flags every day. She is an average 16-year-old school in 1963 in Japan. She gets sucked into saving the school's clubhouse because she is into the journalism club leader Shun. Shun and Umi like each other until Shun realizes they could be siblings. Once they realized they could be brother and sister they grow apart. Umi stays her Shun's side until the end until they completely know if they are true siblings or not. They eventually clean and repair the clubhouse to save it from getting destoryed.