Sayo Oharu

Sayo Oharu is the pink ranger of Mashin Sentai Kiramager and the seventh girlfriend of Kuroninja.

History
Sayo was first introduced to Kuroninja when Kuroninja was almost killed by HurricaneDark, but survived. He was taken to an ambulance where Sayo operated on Kuroninja and saved him. During the operation, Sayo fell in love with Kuroninja and felt a little jealous after finding out that he was dating someone else, but it didn't matter.

Later, she went after Kuroninja after Anti-Kuroninja and the Emerald Club found him, but also when HurricaneDark started chasing after him.

Sayo later became Kuroninja’s seventh girlfriend, but there was a risk of having to retcon this due to certain events, such as Kiramager episodes 12 & 32. Eventually, Sayo would go on to marry Shiguru at the end of Kiramager, but Kuroninja of Earth 0 was too stubborn to retcon anything at this point so he came up with another idea.

Trivia

 * Anti-Kuroninja predicted that Kuroninja and Sayo would form a relationship starting in April 2020, but it actually started earlier in March.
 * The part where Sayo fell in love with Kuroninja while taking care of him at the hospital is known as the Florence Nightingale effect, a phenomenon where doctors fall in love with their patients. However, this would probably never happen IRL.
 * Sayo is the third pink ranger to be part of Kuroninja's top 7.
 * Sayo's name sounds similar to the name of the most controversial addition to the Kuroninja Multiverse.