Runa Natsui (夏居 瑠奈 Natsui Runa?) is an actress known for her role in the Super Sentai series, Samurai Sentai Shinkenger, making history as the first ever female Red Ranger, and youngest Sentai "mom", Kaoru Shiba (Princess Shinken Red), a role she reprised in Kaizoku Sentai Gokaiger two years later.
She also appeared in the critically-acclaimed film School Days with a Pig which was based on a true story. She appeared in Kamen Rider Fourze as Mei Shirakawa.
- Don Quixote (NTV / 2011) - teenage Takako Iwakura (ep.8)
- Seigi no Mikata (2008-Japan-NTV) (NTV / 2008)
- The Bad Dad/Otoko no Kosodate (TV Asahi / 2007) - Rinko Yajima