noun which may take the genitive case particle 'no', noun
first in Japan; first of its kind in Japan
Used to emphasize that something is the first occurrence or debut in Japan, often in news, announcements, or promotional contexts.
本邦初公開の映像が流れた。
Footage was shown for the first time in Japan.
これは本邦初の試みです。
This is the first attempt of its kind in Japan.