Sumaro Daiki

A ninja from Iwagakure (Village Hidden in the Stones), he is always at his twin brother Daisuke's side in battle, as is a result of his Kekkei Genkai (bloodline trait) [See Jutsu Style].

Background
Daiki was born literally connected to his brother. Using A-ranked jutsu, doctors were able to separate the twins. Years later, they both failed miserably in the Ninja Academy, until they discovered that their jutsu only worked when they were using it with the other brother's help. When they finally graduated the Ninja Academy, they joined the first-ever five man rookie ninja squad.

* More to be added later*