カルパッチョちゃんの2021年の誕生日おめでとうございます！！！

パッチョちゃんの誕生日は12月、12月としたら「桐」！
パッチョちゃんの誕生日もガルパンキャラの中で最後なので「きり」！
と言うことで元のソースは花札の桐からです！

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Source: post #5638921
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Happy Birthday to Carpaccio-san in 2021!!!

Paccio-chan's birthday is in December, and December means "paulownia"!
Paccio-chan's birthday is also the last among the GuP characters, and so "paulownia"!
That being said, the original source is the Hanafuda playing card called "paulownia"!

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Paulownia - a type of flower, and in Hanafuda it represents the number 12, or the last month of December.
Source: https://fudawiki.org/en/hanafuda/suits/paulownia
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