The premise is a bit off-putting and incesty but once you get past the first half of the first "episode" (which is a feature-length movie BTW) all that uncomfortable stuff pretty much goes away (the kids get older). Then it's just a matter of accepting that a person who's lived for nearly fifty years is hanging out with high school girls every day 🤷
The whole show is very well done and seems to be a social commentary on the entertainment industry and to a lesser extent, how much connections and owed favors matter in Japanese culture. I find it different and refreshing 👍