Air Do is a regional Japanese airline based out of Hokkaido. Originally named Hokkaido International Airlines it operates scheduled flights connecting the islands of Hokkaido and Honshu, with hubs in both Sapporo (New Chitose Airport - RJCC) and Tokyo (Haneda Airport - RJTT). The airline changed its name in 2012 to Air Do. The airline is directly is majority owned by the Development Bank of Japan and All Nippon Airways after the investment fund that used to own Air Do dissolved in 2008 leaving these two companies majority stakeholders.
I think this livery is really nice to look at and will open up a lot more routes to Hokkaido in IF as well as diversifying the B767-300 which is currently very much populated with liveries that are majority from the US. Out of the airlines fleet of 12 aircraft the B767-300 accounts for 4 of those, the remaining being B737-700’s.