This place near Sapporo https://www.tripadvisor.com/ShowUserReviews-g298560-d1972758-r263036612-Yawaraginosato_Hoheikyo_Onsen-Sapporo_Hokkaido.html
Saw a crew of 15 or so yakuza hanging out with their tattoos
Was very interesting to see younger guys washing the backs of the older guys and...