What are these? They're Famicom disks, but I've never seen non-yellow diskettes before. I have my Sharp Twin packed away so I can't test them, but the black one apparently is a bootleg, saying "Hacker international" on the bottom. The red one though is legit, as it came in an official Nintendo sleeve. If i were to guess, it's maybe some sort of download-station diskette, where you downloaded games on empty disks? "Hacker International" HA - CK - ER
Apparently, Hacker International was famous for bringing unlicensed smut to the FDS (through games like Soap Panic and AV Slots): http://www.nesplayer.com/features/FDS/index.htm http://www.nesplayer.com/features/soappanic/index.htm As for the red disk - I would bet on it being an unlicensed blank disk in a Nintendo case. It's also likely that someone would have recorded something on it.
The black one is either a Hacker game or it's a copy disk that goes with their disk copying hardware. The red one is another unlicensed game or another standalone copy disk called Kosodategokko.