noun, used as a suffix
-ness; -like quality; essence of
Attaches to nouns (often people, brands, or concepts) to express the distinctive character, spirit, or typical quality of that thing. Similar to English '-ness' or '-like quality', but more about capturing the core identity.
彼の作品には、いかにも村上春樹らしさがある。
His work has that unmistakable Haruki Murakami quality.
この店のらしさを大切にしながら、新しいメニューも取り入れたい。
While cherishing what makes this shop special, I also want to introduce new menu items.