Eita Sato and Aoi Hoshi walked toward their junior high school graduation ceremony, and their footsteps echoed in polished halls once crowded and noisy with students. The two were the only graduates of Yumoto Junior High in a mountainous part of northern Japan - and the last. The 76-year-old school will shut its doors for good after the school year ends on Friday. "We heard rumours about the school closure in our second year, but I didn't imagine it would actually happen. I was shocked," Eita, who, like Aoi, is 15, said. [...] Births tumbled below 800,000 in 2022, a new record low, according to government estimates and eight years earlier than expected, dealing a knockout blow to smaller public schools that are often the heart of rural towns and villages. About 450 [schools] close every year, government data shows. Between 2002 and 2020, nearly 9,000 shut their doors forever, making it hard for remote areas to lure in new and younger residents.