What if you possessed the ability to hear voices or glimpse fragments of images from the future? Would that be a blessing or a curse? Glasslip chronicles the life of Touko Fukami, an aspiring glass artist hailing from a family of glass artisans. She relishes her carefree life in Fukui, aside from the occasional fleeting images she perceives. During her eighteenth summer, she encounters the transfer student Kakeru Okikura at her school, and subsequently meets him again at her favorite café, Kazemichi, alongside all four of her friends. Voices from the future guide Kakeru to Touko, and his presence upends her unremarkable existence. The six friends must confront their most unforgettable summer, brimming with hope, affection, and heartache.