Charapedia recently asked female anime fans the question: Which anime characters are the most pure and innocent? You can view the full results for this poll here.
Here are the female results:
10) The Hirasawa Sisters (K-On!)
9) The Okita Siblings (Gintama)
8) The Araragi Siblings (Monogatari)
7) The Orihara Siblings (Durarara!!)
6) The Uchiha Brothers (Naruto)
5) The Matsuoka Siblings (Free!)
4) The Shimura Siblings (Gintama)
3) Kamui and Kagura (Gintama)
2) The Elric Brothers (Full Metal Alchemist)
1) The Matsuno Sextuplets (Osomatsu-san)