Translated by yours truly, beautifully edited by svines85.

The name Hakka is a homonym of the word for "mint", but written with different kanji (mint is 薄荷, while the kanji used here are 薄花).
The latter can also refer to a pale blue color (薄花色), and 薄花少女 may or may not be related to the Chinese name 薄花女, but unfortunately I have zero knowledge of Chinese so I can't expand upon that.

alt trans: /g/958517/6e6df5b772/

Mankitsu Scans decided to translate Hakka into "Peppermint"

This story appears to be omake to this: /g/952206/764d27aa56/

Base +9, jfragrettel +8