Kuroba Uno

 (神崎うの) is a member of Eureka and a former member of Niconico♡SWEET, Update and Saigo wa Koko de.. She went by Uno Marina (宇野麻里奈) in the former two groups.

She graduated from Saigo wa Koko de. in June 2018, left Update with its disbandment in November 2019 and Niconico♡SWEET with its disbandment on December 30, 2020.