Deidara was a young rouge ninja that was forced to join the notorious "Akatsuki" group after losing his deal. He became evil, but one day in a raid of the leaf village, he saved a young ninja named Kiiro Nara [who was trying to kill him] from Kisame's wrath. Kiiro didn't understand her rescuer's intensions, or reasons for saving her, so she didn't trust him one bit.
He couldn't stand the thought of this because he fealt it was love at first sight for him. Deidara had never fealt love, so he tried sneaking to her at night & trying everything to explain his actions, the first time broke out into a fight because she thought he was evil. At every turn & random night, Deidara would sneak to Kiiro until finally she saw the real him. He seduced & charmed her, so she gave into him & they fell in love. Deidara then left the Akatsuki & was accepted into the leaf vilage. Thus, Kidan was born. Kidan was born a beautiful child. He had his fathers eyes, hair, & looks. But as he grew up, gained his mothers shortness. He was made fun of for this alot in the academy, but beat the kids who tried to mess with him up. Soon everyone learned not to mess with Kidan, because he had his mother's firey attitude, strength, & temper. He gained his fathers love of art, so he learned to use clay in his jutsu's. He also carried on the Nara style of shadow manipulation jutsu's. Kidan was placed on team 2 with Yoime Hyuuga [Son of Tenten & neji] & Shikaru Nara [his cousin & daughter of Temari & Shikamaru] & he became a genin.

An RPC done on MS paint only. Off a screen shot of Deidara.