Following the unfortunate circumstances of Hinako deciding not to go to the Fuji Rock festival due to the current world event, she was left with a plethora of free time. Thus, to stave off boredom, she set out to knit a sleepsack by hand. She originally sought to use wollen yarn, but decided against it considering it would be too hot for summer. She then opted to use environmentally friendly yarn made from recycled T-shirts. The whole thing took her a total of 11 hours, but she completed it!!