Second. Also, I can read Japanese, and that’s Chinese.

Even for someone who’s illiterate, Chinese commas resemble English ones, just placed in the center of a full-width character box. Japanese commas are literally 「、」.

Hokkaido is in Japan

It's (Traditional) Chinese.

It can be Taiwan, though lots of Japanese shops put up signs in foreign languages to attract tourists.

There's a sentence in Cantonese "我認第二冇人敢認第一", which means "if I declare second, no one will declare first".

I wasn't super sure if they meant that because Simplified Chinese is not likely to be Cantonese but Mandarin.