Luna Kokonoe

Luna Kokonoe is the green ranger of the Ninningers and its spinoff group, Ninnin Girls, also known as MidoNinger or Ninnin Green. She was the apprentice of Kuroninja before she used what she learned to successfully audition for the Ninnin Girls.

History
Luna first became Kuroninja's apprentice sometime after he defeated Anti-Kuroninja in 2017. This was the first time Kuroninja actually had an apprentice, because Ayame and Ran are considered to be Kuroninja's familiar rather than his apprentices. This is where Luna got her nintality from.

Later, Luna auditioned for the Ninnin Girls and earned a spot in the group due to Kuroninja's training. She then got the MidoNinger shuriken, but then she was possessed by Kyuemon Izayoi, whom the MidoNinger shuriken was meant for. After becoming MidoNinger, she was no longer Kuroninja's apprentice.

It is unknown whether this is canon or not due to the complex nature of the Kuroninja series, but Anti-Kuroninja once stole the MidoNinger shuriken from Luna to disguise himself as the Green Ninja Steel Ranger.

Joining the Anti-7
After a long period of inactivity, Luna would later be brought to Darkprism by Shizuka of the Wind during the events of Shift in Dimensions. After that, she became one of the founding members of the Anti 7. Luna and the other Anti 7 members joined forces with Kuroninja to save the Kuroninja Multiverse from Akuma no Kuroninja and Tojitendo.

Later, Anti-Kuroninja won a contest to spend a day with Fuuka Igasaki but she got food poisoning on the day of their "date". Luna had to substitute for Fuuka instead, which meant that Anti-Kuroninja and Luna had to spend time with each other. Anti-Kuroninja didn't really like Luna due to his experiences with trying to steal the MidoNinger shuriken for his evil plans. Eventually, the two of them would team up to take on a Sakuraiser envoy known as Sakurider.

Personality
Luna is a cheerful person who takes her job as a ninja very seriously. She also felt sorry for Anti-Kuroninja after learning of how many times ShiroNinger rejected her, and is trying to help him so he doesn't come off as desperate.

Trivia

 * In canon, Luna only appeared in one Ninninger movie.
 * Kuroninja wanted MidoNinger to be adapted into Power Rangers Ninja Steel. The absence of a green ranger in Ninja Steel is one of the factors that led to Kuroninja being disappointed with the movie.
 * Luna is the only female member of the Ninningers to not be part of the 7. Ironically she is part of the Anti 7.