Upon receiving a brand‑new smartphone as an unexpected present from her husband Nasa, Tsukasa Yuzaki feels elated. She explores every feature, from customizing themes to creating animated stickers, and swiftly adds contacts while mastering LINE along with sending stickers. Yet her excitement fades quickly when a former colleague contacts Nasa about an urgent assignment, and Tsukasa learns that her love may have to stay overnight. The call leaves her heart racing, unsure if he'll return before dawn. Facing her first night alone since marrying Nasa, can Tsukasa and her new device bridge the gap that divides the young pair and conquer the isolation threatening to drag her down?
