Vocaloid, Kagamine Len, Kagamine Rin, Kagamine Mirrors
Nakamori, Kaito, and Aoko by Akiyoshi
Mary and Seto
Kaede Kayano, Nagisa Shiota and Karma Akabane
pixiv is an illustration community service where you can post and enjoy creative work. A large variety of work is uploaded, and user-organized contests are frequently held as well.
nagisa ansatsu kyoushitsu