Use a brief expression of condolence, such as: "On this sad occasion we grieve with you".
I heard the news of his death with deep regret.
In nostalgic moments we may tend to think of childhood as a time of almost unbroken happiness.
The orchestra struck up nostalgic music.
Among all cheeses, the one that I like is Camembert. I love its smell because it makes me nostalgic.
I would like to draw your attention to the fact that Kanjisho uses multiple sources of data provided by third parties.
The search results are provided by the wonderful Jisho API which itself uses various data sources which you can find on the jisho's website. The data concerning the kanji strokes are provided by the KanjiVG project, under the CC BY 3.0 FR license. I also use Tatoeba to provide example sentences and Kuroshiro to obtain the furiganas and romajis versions of the sentences.
If you find any vices, errors or malfunctions, please let me know so that I can correct them.