Regarding Izumi Matsumoto's condition, I had heard of it, which sucks hopefully he gets it...
@Buranchi hopefully yours gets better too, though you, yourself, said it probably wouldn't.. :/
Anyway, reading ANN article (And from the Kimagure Orange Road Kickstarter that DMP did a couple of years ago) it seems as if Matsumoto doesn't really have that much money? In the article it's stated that one of the reasons Matsumoto is scared of the surgery is because it's expensive.. Sure, I guess most surgeries are expensive but, it makes me wonder just how expensive of a surgery that would be that it makes Matsumoto consider it expensive...
According to easylove'sTop 125 best jump sellers KOR sold around 20million copies..
And each Tankobon is sold at around 440 (IIRC tankobons were less expensive, they get a bit more expensive with the passing of time... But let's say when Kimagure was being run in Jump tankobons were sold at 350 Yen)
So 350 Yen x 20'000,000 copies of KOR= 7'000,000,000 Yen (Or roughly $70'000,000 USD), which is the total revenue from the series and supposedly the authors get a 10% cut of Tankobon sales (Some get a bit more, but let's just assume Matsumoto got a 10% cut), that would mean Matsumoto got around 7'000,000 USD for Kimagure Orange Road just from its royalties.
Not counting Anime sales or even taking into consideration Kimagure Orange Road worldwide sales (The series was broadcasted in different european countries during the Dragon Ball era, so I can only assume printings of the manga/ sales of merchandise are at least decent).
So yeah, I know Tokyo is an expensive city and apparently he stopped drawing manga in 1999 because of his condition, but even assuming he spent $100,000 USD a year ever since he finished KOR (1987, so 32 years ago) that would still be $3'200,000 he has spent.. So Idk something seems off, maybe he overspent Idk.