Some gravure idols earn well enough to stay forever in same naughty level as Tsubasa. In addition they can work in hostess clubs, have active in YouTube and other socials, do enko kosai (~compensated dating, sugar daddys) or rich bf. You remember what happened to Shoko Takasaki, enjoy revealed and needed to turn as Takahashi and launch JAV career. Even that was success story for her I don't hope it for Tsubasa.
Kingdom products have nudity quite much by her but they do that darkening.
One brightened (awful quality) GIF
When finding short video about Tsukasa Kanzaki butt revealed under Budweiser top then remembered that Tsubasa had something similar same time but found only still photo.