Naomi Katagaki and Ruri Ichigyou, high school students who appear to be polar opposites, share a passion for reading that brings them closer. Ruri's outspoken and intimidating demeanor does not deter Naomi from spending more time with her, discovering her softer side. Naomi develops genuine feelings for Ruri and confesses his love to her, which she reciprocates enthusiastically. Sadly, their relationship hits a roadblock when Ruri falls into a coma after being struck by lightning. Naomi is determined to see her smile again and goes to great lengths to bring her back to her ordinary life.