The Lost Uchiha.

Rishi Uchiha, the lost brother of Shisui Uchiha, Rishi was raised by his parents, he quickly rose through the ranks and became highly regarded, after his brothers supposed demise, he left the clan without warning only returning after hearing rumours that Itachia (female itachi) had killed the clan, he quickly found out why and forgave her, then he made contact with someone calling herself Madara, she offered him a place in the Akasuki.