Kira-Kira is a novel by Cynthia Kadohata about a Japanese-American girl named Katie and her family. After moving to Georgia, Katie has only Lynn, her sister, as a friend. Eventually Lynn is diagnosed with lymphoma and Sammy, their brother, is injured by an animal trap. After much distress, Lynn dies and the family falls into grief, though Katie comes to understand the optimistic philosophical meaning of "kira-kira," a word she and her sister used to use to describe sparkling things in life.
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Their book summaries aren't as good as other providers, but PinkMonkey often has interesting insights that aren't mentioned elsewhere on the Internet. For example, they go over literary elements (like setting, conflict, and mood), compare and contrast, and symbolism/motifs. It's a good site if you want to find a unique fact or angle that other students don't know about.
Includes the standard sections found in most book notes, including a book synopsis, chapter by chapter analysis, author biography, character list, essay topics, book report ideas, and study questions. This website is less comprehensive than other book notes sites, but could be useful if you're looking for a quick review.