APCAS was formed to support the victims affected by the Asian tsunami occurred in on December 2004. Amount of aid material and human resource were provided input for the major catastrophe from the world, on the other hand, this assistance caused to create crucial problems among the people. 

In 2007, another 3 year later beyond the tsunami, continual heavy rain had widely set off landslides in the central province as a result of climate change. Unfortunately, this disaster was hidden behind the tsunami reconstruction and, as a result of the assistance for the landslide victims was condensed at that time.

Since 2009, they set up office in Sri Lanka and started to work on wide-range of projects in other area in addition to support landslide victims. In 2010, they obtained NGO status from the NGO Secretariat of Ministry of Defense in Sri Lanka.

The Name “APCAS” stands for “Action for Peace, Capability and Sustainability” in English, and at the same time, the sound in Ainu language which is the aboriginal language in Hokkaido Japan means ”walking together”. This is why; APCAS has such dual meaning which deeply-committed to the basis for all activities.