Doe's deidara have a sister

Answer 1

No, he does not.

not funny. HES NOT A GIRL JEEZE.

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what! Deidara having a sister... whats wrong with that??

actually its really unknown~

but a girl called Kurotsuchi who comes also from Deidara's village

happened to refer him as Deidara-nii (nii, used to address as to a older brother or someone really close to you)

but there is a chance she isn't, but i sure hope she is!

here is a site to look into further details >> http://naruto.wikia.com/wiki/Kurotsuchi

hope this helps!

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Apparently he does have a sister, and an older brother.

http://community.livejournal.com/20_truths/9002.html

It's said here.

Answer 2

no. also if ur saying him i will say this: HE IS NOT A GIRL!there hasn't really been a mention of his family and the only time there is he has no sister so no he does not and never will have a younger or older or twin sister