Whochan’s site is a personal resource devoted to mountaineering in Hokkaido, managed by Fū-chan. It documents trips and route information across the Hidaka Range, Daisetsuzan, the Shiretoko Mountains, the Shakotan and Mashike ranges, and the Niseko Range. The site focuses especially on stream climbing, ski mountaineering, winter traverses, and full traverses of the Hidaka Range, with trip reports, plans, and a searchable record of past outings.

Entries offer detailed accounts of routes, terrain, conditions, and decisions made in the mountains, covering destinations such as Toyoni-dake, Idonnappu-dake, Shari-dake, and other peaks and valleys. The site also includes route guidance, an archive, a diary, and practical visitor information. Fū-chan notes a connection with the Hokkaido no Yama to Tani (“Mountains and Valleys of Hokkaido”) guidebook series and directs visitors to Twitter for inquiries. More recent activity may be available through Yamareco. For climbers researching Hokkaido’s mountain regions or looking for firsthand accounts of challenging backcountry routes, the site serves as a focused archive of local outdoor experience.