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I suspect anybody who can get their hands on the original Japanese book can trivially and definitively answer this, but I don't have it and can only guess. A very promising candidate is 懐. It's one of the rarer kanji used for to think, (おもう, omou, usual kanji would be 思う). A common use of 懐 is the word 懐かしい (natsukashii, loosely, nostalgic). As the jisho....


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