A side comment: the menu lists the sardines as “kibinago sardines tempura” when I looked at the menu picture on my phone just now.
It is actually not sardines, but technically silver stripe herring (in defining English proper name for kibinago キビナゴ【黍魚子/吉備女子/吉備奈子】 )
More commonly seen in sushi restaurants in trios wrapped diagonal to the rice pad, often served with vinegared miso sauce.
But I’m sure deep fried this shit good is with a sexcellent JP beer…