[Naruto] The Uchiha Manor

Miaobai, an orphan of war, is adopted by an elderly woman at Naka Shrine and becomes the miko who protects the Uchiha Clan.

After the old woman passes away, Miaobai meets sixteen-year-old Madara Uchiha. From then on, those red eyes ruin her whole life.

A hundred years later, having accidentally eaten mermaid flesh, Miaobai remains forever young and immortal, still watching over every member of the Uchiha Clan.

Her heart has become fixated on this, and she has promised them all that they will meet again in the underworld.

Miaobai: You useless youngsters, don't let the old ancestor catch you, or you'll get a real beating.

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The story starts in the Warring States period and continues through the end of the Fourth Great Ninja War.

Early main story: Episodic stories about each Uchiha, as well as Kakashi. He's got a Sharingan, so doesn't that count as half an Uchiha?

Later bonus stories: The chaotic, evil free-for-all of the Uchiha clan mansion in the underworld.

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The heroine starts out as a good woman, and Madara is her unattainable ideal. Later, she becomes a bad woman, treating all the younger generation equally, with no ranking or exceptions.

Theme: Respect the elderly and care for the young