• §0　prologue　
• first

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• §　1　new field
• second
• third
• fourth
• fifth

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• character 1
• character 1

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• §2　The speed of sound
• sixth
• seventh
• eighth
• ninth

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• §3　a visiting professor
• tenth
• eleventh
• twelfth
• thirteenth
• fourteenth
• fifteenth
• sixteenth
• seventeenth

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• character 2
• character 2

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• §4　southern island
• eighteenth
• nineteenth
• twentieth
• twenty-first
• twenty-second
• twenty-third

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• §5　an archeological society
• twenty-fourth
• twenty-fifth
• twenty-sixth
• twenty-seventh
• twenty-eighth
• twenty-ninth

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• character 3
• character 3

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• §6　A blue flash
• thitieth
• thity-first
• thity-second
• thity-third
• thity-fourth

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• extra
• mixed ability

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• §7　millionaire
• thity-fifth
• thity-sixth
• thity-seventh
• thity-eighth
• thity-ninth

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• character4
• character4　team Yuuki

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• §8　Sandy ground
• fortieth
• forty-first
• forty-second
• forty-third

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• §9　a hot spring resort
• forty-fourth
• forty-fifth
• forty-sixth
• forty-seventh
• forty-eighth
• forty-ninth

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• §10　match in volcano
• fiftieth
• fifty-first
• fifty-second
• fifty-third
• fifty-fourth
• fifty-fifth
• fifty-sixth
• fifty-seventh
• fifty-eighth
• fifty-ninth

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• character5
• character5

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• §11　after the battle
• sixtieth
• sixty-first
• sixty-second
• sixty-third
• sixty-fourth
• sixty-fifth
• sixty-sixth
• sixty-seventh
• sixty-eighth

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• character6
• character6　team Yuuka

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• §12　The new supporter
• sixty-ninth
• seventieth
• seventy-first
• seventy-second
• seventy-third

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• §13　A thick forest
• seventy-fourth
• seventy-fifth
• seventy-sixth
• seventy-seventh
• seventy-eighth
• seventy-ninth
• eightieth
• eighty-first
• eighty-second

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• §14　In the rain
• eighty-third
• eighty-fourth
• eighty-fifth
• eighty-sixth
• eighty-seventh
• eighty-eighth

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• §15　examination
• eighty-ninth
• ninetieth
• ninety-first
• ninety-second
• ninety-third
• ninety-fourth

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• §16　gravity
• ninety-fifth
• ninety-sixth
• ninety-seventh
• ninety-eighth
• ninety-ninth
• one-hundredth
• one-hundred-first

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• § Final　epilogue
• one-hundred-second

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• extra2
• sub title

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