Uka rebuilds herself one quiet moment at a time, and Kai sees her before she sees herself. The show moves at the speed of a real person learning to be brave, not a plot racing toward confession scenes. What makes this stick is that her anxiety doesn't vanish when he notices her, it just becomes bearable, and that's everything.

Uka spent middle school frozen in place, earning the nickname "Stone" from peers who mistook her shyness for having no feelings at all. Now at Hachimitsu High School, a place known for giving its students freedom, she's determined to become someone different. On the first days of class she finds herself sitting beside Kai Miura, the effortlessly cool boy whose hair is the color of lemons. Uka had chosen this school because of a single word Kai said to her when they crossed paths once in middle school. To her, the popular Kai seems far out of reach, yet he begins quietly looking out for her. His encouragement draws Uka out of her shell, and little by little she starts to find her place among her classmates. What starts as a small spark becomes a gentle romance about a girl slowly letting the world back in.