(Black Jack, viewed from behind, looking up at old empty buildings in ruins, over-run by cats.)
(“Homesickness,” Black Jack Vol. 14)
The polluted, cat-ridden Fort Island once home to fishermen in this chapter is fictional, but it has some basis in reality: there are at least two islands in Japan that are absolutely overrun by cats. Tashirojima, nicknamed Cat Island, is the most famous example and was home to a fishing village which brought over cats for pest control, although in the modern era, the human population is now mostly elderly and far outnumbered by their furrier counterparts.
Aoshima is the other.