You Have the Sharingan, I Have the Magic Eye

[Opening on 10/23, still struggling to finish my backlog (some kind of cat quietly appeared on the character card...)]

Madara and his friends found someone in the Naka River.

He had peculiar ideas, a laughably poor grasp of social norms, and seemed more like a wild animal than a human. He had no chakra, yet could use all sorts of bizarre skills. And he had a pair of eyes capable of using strange ocular techniques... Eyes?

...Could they be the legendary Mangekyo Sharingan?

Could it be that his clan still had a humanoid secret weapon left over from ancient times?

Because of this possible blood relation, even after he and his friends fell out, Madara couldn't just let the other man go. Instead, he somehow managed to get Setoros into the clan.

Much later.

His estranged friend came to find him, looking worried.

“Madara, I realized something.”

“What a coincidence, Hashirama. I realized something too.”

“Setoros...”

“Could he be a Senju-Uchiha hybrid, or maybe not an Uchiha at all?”

Hashirama: ?

Madara: ?

Their younger brothers, who had also learned the truth, looked surprisingly calm.

“Could it be that...”

“Setoros isn't human at all?”

The two of them: ...No, wait.

Why are our little brothers so close to that guy?!

>>

“You humans might call this impulse love.”

“But for us...”

For a True Ancestor, the impulse that begins with interest, steadily intensifies, and makes you want more and more to be close to someone...

“Is a desire that can kill you.”

*No choosing a love interest, separate endings

*A Type-Moon vampire romance (yes!)

Theme: Overcome every obstacle to meet you, and then fall in love with you