Mima is an inland city in Tokushima Prefecture, spread along the Yoshino River and the lower slopes of western Shikoku. It is not a single tight town so much as a collection of older communities, with Wakimachi and Anabuki giving travellers the clearest reasons to stop.
The best-known sight is the Udatsu townscape in Wakimachi, a preserved street of merchant houses from the Edo and Meiji periods. Their raised firewalls, called udatsu, were practical protection but also a visible sign of wealth. Nearby old residences and the restored Wakimachi Theater fill out the picture of a prosperous river-valley town.
Mima is also a useful base if you are moving between Tokushima, Takamatsu and the interior mountains. It is quieter than the coastal cities, but that is the point: old streets, river light and a slower Shikoku rhythm.