If you zoom in on the can it says 6%. Japan went through a phase of increasing alcohol percentages on these types of drinks ~10 years ago when the govt was raising taxes on beer a few times in a relatively short time period. They first came out with the “strong” versions which were 9%, and I think that wave peaked at a 13% lemon drink (which tasted like licking a robot, btw).
More recently Japan’s been a little more health conscious about booze in general, so there’s been an increase in types of non-alcoholic versions of drinks, including pale ale type beers and cocktails. The companies making cheap options like the -196 and the zeros have subsequently put 6 and 7% versions in the stores. There’ve also been studies showing young people drinking less overall, so it’ll be interesting to see what the next moves are.
Do they sell the 500 ml version? The cans in this pic are 330, which is a bit smaller than the standard 350 in Japan as well.