The rain fell endlessly tapping against the brim of Sasuke's cloak as he walked through the narrow alleyways of a ruined village. This wasn't a mission ordered by the Hokage this was personal. He had sensed a strange chakra signature here one that felt familiar too familiar. As lightning flashed in the sky Sasuke stopped before a broken temple. Inside a shadow waited. A lone figure sat cross legged face hidden under a hood.
You came! The figure said. I wasn't sure if you still cared. Sasuke narrowed his eyes. Your chakra it's like Itachi's. The hooded man laughed softly. That's because I was trained by him long before you knew what he truly was. Sasuke's Sharingan activated instantly, spinning like a storm. Lies. No. Truth. I was his shadow mission. While he was killing the clan I was saving the last of its secrets.
The man stood and removed his hood. He had the Uchiha crest. He had a scar over one eye. And his eyes were Mangekyō Sharingan.
I am Raien Uchiha. The forgotten twin of Itachi. Sasuke's world froze.
You lie!
Do I Why do you think Itachi always fought alone Why did he cry before he left the village I was his burden. Sasuke felt something stir deep inside. Could this really be true? Raien stepped forward. I've waited years to find you Sasuke. Not to fight you. but to pass on what Itachi left behind. He tossed a scroll onto the ground. It bore the Uchiha seal. What's in it? Sasuke asked. The truth. And the final technique your brother never taught you. One that could protect everything you love or destroy it. The storm outside grew stronger. Sasuke stood in silence the weight of the past pressing on his shoulders again. He had come to the rain seeking
closure. Instead he found a new path one drenched in blood, secrets, and perhaps, redemption.