FASTENING DAYS 4

"Fastening Days 4" is a mini-anime series produced by YKK, continuing the story from previous installments. It follows the protagonists Yoji, Kei, Kelly, and their robot companion Oscar as they continue to protect their town using 'Fastening Machines.' This time, they encounter a shy boy named Samhen and his AI robot Jack. Samhen transfers to Kei and Kelly's class and is reluctant to talk about himself, while his chatty companion Jack is more than happy to help him communicate. One peaceful afternoon, the young heroes must protect the town from a sudden and serious danger. The series emphasizes the bond between AI and humans, and the actions the children take to protect it. Released in 2019, the series consists of three episodes. It is noted for its futuristic setting and action scenes incorporating technology.