The time is the Edo period Kansei year.
Under the "Kansei Reforms" by Roujuu Sadanobu Matsudaira, the people's entertainment was severely cracked down. Everyday life is somewhat stuffy, like a bird trapped in a basket.
Meanwhile, the girls who live with their own worries.
At that time, history moves.
A man from current Japan explodes their thoughts as "idols!"
(Source: Official YouTube channel)
