Bus tour and bus service in hokaido

I am thinking of going to see autumn foliage in ‡KDaisetsuzan as well as the shiretoko national park. Is there a bus tour ? Or bus service that connects between the 2 national parks?

Shuttle buses from Sounkyo to Ginsendai/Kogen Onsen, dedicated to autumn foliage there.
http://www.town.hokkaido-kamikawa.lg.jp/section/sangyoukeizai/chs81200...

Ginsendai (run only 2017.9.16-2017.9.24)
http://www.town.hokkaido-kamikawa.lg.jp/section/sangyoukeizai/chs81200...

Kogen Onsen (run only 2017.9.21-2017.10.1)
http://www.town.hokkaido-kamikawa.lg.jp/section/sangyoukeizai/chs81200...

Shuttle bus timetables in 2016.
http://www.town.hokkaido-kamikawa.lg.jp/section/sangyoukeizai/chs81200...

North Liner Bus connecting Sounkyo/Daisetsuzan and Utoro/Shiretoko. South Liner connects Shiretoko and Lake Akan National Parks.
http://en.visit-eastern-hokkaido.jp/plan-your-trip-all/toursightseeing...

Tokachi Bus has routes of going around Daisetsuzan National Park.
http://uu-hokkaido.com/images/corporate/bus_map.jpg
http://uu-hokkaido.com/images/corporate/access/obihiro/tokachibus/bus_...

One of the most recommended routes to take is Sapporo-Utoro-Kushiro-Lake Akan-Sounkyo-Asahikawa.
http://www.uu-hokkaido.com/images/corporate/access/shiretoko/sharibus/...
http://www.uu-hokkaido.com/images/corporate/access/kushiro/akanbus/bus...

Regional bus companies. See Shari Bus for Shiretoko bus tours.
http://www.uu-hokkaido.com/corporate/sharibus.shtml
http://www.uu-hokkaido.com/corporate/akanbus.shtml
http://uu-hokkaido.com/corporate/tokachibus.shtml
http://uu-hokkaido.com/corporate/abashiribus.shtml
http://uu-hokkaido.com/corporate/nemurokotsu.shtml