Some interesting things I noticed:
Miyama Karen is playing the young Sakurako. Remember from HOTMAN 2?
Anotehr link... She plays the paper piano - just like what Nanami did on HOTMAN 2.
It has been awhile since I've last seen a morning drama that wasn't taking place in modern times. Junjo Kirari has a VERY similar feel to Karin. Even the business (miso paste) is exactly the same! And a HUGE change from Kaze no Haruka.