The story happens in a circus in Paris in the 1970's. (...) Much is made of the romance of the circus atmosphere, of flying through the air on a trapeze, etc etc. Think cirque here, not circus. We're doing Old World riffs on the romance and tawdriness of the ring. There are no elephants in tutus walking on their hind legs; it's slit-eyed jugglers and daring death-loving trapeze artists and sad Pierrot clowns, even if the Pierrot clown - our hero, Torinosu, 'Bird's Nest' - has a false red nose. The tawdriness comes from the circus master pimping out his performers to anyone willing to pay. (...) And there's tanbi decadence - ghosts who wander into the action looking like teenaged girls even if they're the hero's brother, and abandoned neurotic women with a thing for inflicting pain, and buracon and possible murder and unspoken pining and a hero who looks about to perish at any moment from terminal angst.

I just finished reading this, and I loved it. Another manga that I did not read the summary for, I just dived right in because I heard it was similar to Zankoku na Kami ga Shihaisuru (another great manga).

It has nudity, so yeah. Anyways, I need time to process this manga too, so if you need anymore convincing, just check out the reviews.