What if you had the ability to hear voices or see visions from the future? Is this a good thing or a negative thing? Glasslip recounts the story of Touko Fukami, an ambitious glass artist who was born into a family of glass artisans. She likes her carefree existence in Fukui, save for the occasional glimpse of an image. On her 18th summer, she meets transfer student Kakeru Okikura at her school, and then again with all four of her pals at her favorite café, Kazemichi. Kakeru is led to Touko by voices from the future, and his entrance disturbs her boring existence. All six of the friends must face their most memorable summer filled of optimism, affection, and adventure.