Riku Matsuzaki is the little brother of Umi Matsuzaki and Sora Matsuzaki in From Up on Poppy Hill. Appearance Riku has brown hair and brown/black eyes and seems to be a bit taller than his two older sisters. Gallery This article is a stub. You can help Ghibli Wiki by expanding it. Retrieved from "https://ghibli.fandom.com/wiki/Riku_Matsuzaki?oldid=105240" Categories: Article stubs Children Humans Male characters From Up on Poppy Hill characters Characters Supporting characters Community content is available under CC-BY-SA unless otherwise noted.