was a town located in Minamitakaki District, Nagasaki Prefecture, Japan. As of 2003, the town had an estimated population of 5,051 and a density of 430.97 persons per km². The total area was 11.72 km². On October 11, 2005, Aino, along with the towns of Azuma, Chijiwa, Kunimi, Minamikushiyama, Mizuho and Obama (all from Minamitakaki District), was merged to create the city of Unzen. External links Unzen official website Dissolved municipalities of Nagasaki Prefecture