Shall We Date? Destiny Ninja 2: Flare's Route (Season 1)

The story takes place on Yamato Island. Ayame is a talented ninja, gifted with the ability to wield a powerful and mystical sword, known as The Sword of the Gathering Clouds of Heaven. Her coming-of-age day is near and the sacred symbols of the four villages composing Yamato Island are becoming corrupted. Her duty, as the daughter of the House of Kushinada, is to purify the symbols of the villages and complete her mission by sunrise on her coming-of-age day. Failure to do so will cause a tremendous disaster that destroys the world.

Ayame must now travel across the island to purify the polluted symbols with one of eleven ninjas, each from differing villages and the descendants of legendary ninjas who nurtured emotional bonds with her ancestor. Thus her journey to save the island from disaster begins...

Yes, there were eleven . You must have heard of Kaito, Shiroya, Kikyo, Rindoh, Ran, Kikum Ayu, and Yayoi, but what about Flare, Sakura, and Takashi? The three siblings were also ninjas that Ayame could have also picked. This is the true story.