Kumiko Aso. I am surprised no one mentioned her on the list. She is a quality actress and I glad she is a regular in movies, not crappy dramas
Miho Kanno. You gotta watch her works when she was younger (1997-2005). Sad to see she is typecasted in bland roles, even though she still stands out due to his talent
Riisa Naka. Younger, female version of Yuusha Yamada, her versatility is simply jawdropping and has countless expression to convey various emotions. Still a bit atrocious in terms of role choices, though
Fumi Nikaido. This youngster is way ahead of her biological age. She is set to be on the premier league indeed.
Mikako Tabe. A comedy master for someone of her age and versatile as well
Rena Nounen. A new discovery this year, she is making headlines in Japan right now due to fantastic performance in Amachan. Technically decent and super-adorable talent.
Mayu Matsuoka. Again, I came across this young actress in many good wonderkid shows, and fact that she is casted in all that critically-acclaimed show is already astounding. She is still 18 years old but can portray very diverse roles.