She was referred to only by name in the chapter 'Hatsune' (First Warbler) for the last time and in the chapter 7Wakana: Jo' (New Herbs, Part I) it was told that she had already been dead.
その後は「初音」で名前のみ登場するのを最後に、「若菜上」で既に故人であることが告げられた。