With plans afoot to lower the age of adulthood to 18 from 20, following the drop in the legal voting age last year, many Japanese, particularly those in their late teens, seem unprepared for the societal shift.

In fact, a majority of Japan's teenagers do not appear to be keen on the idea, and many people say that 18- and 19-year-olds lack the ability to make judgment calls or take responsibility for their actions.

A Kyodo News survey of this demographic found earlier this year that a majority of the respondents are against the plan, with 68 percent opposed and only 32 percent in favor.