I used to like Manga quite a bit, and I first visited this place during that period.
While this museum is certainly interesting. After maybe 20 minutes of wandering around, i was kind of done. I wasn't thaaaaaaat into manga.
From my memory, the place is essentially...just a bunch of manga. They do have some really old copies of stuff though, which was cool.
I still suggest checking it out. Its not expensive and it has a few cool things to see, but I suspect it will be a short visit. There are muuuuuuuch better things to see in Kyoto
It's still cool though. Add a star if you're obsessed with manga.