Mizuumi Ramune

 (水海らむね) is a member of Niconico♡PRINCESS and a former member of no concept, Oka no Kiseki, and Niconico♡STREET.

She was a founding member of Oka no Kiseki and graduated in April 2020.

Simultaneously, she joined Niconico♡STREET in July 2018 and graduated in September 2018.

She was a founding member of no concept.