This Hatsune Miku design is illustrated by Gozen4ji with Nasos as the concept designer for Tsuyu theme, a theme for Cospa papercraft doll in 2011. Can be called Jito Miku or Zito Miku.
Tsuyu is the rainy summer period in Japan, usually from late-May to early-July. Jito is taken from a Japanese expression Jito-Jito, which means very humid or rain that feels damp and long lasting.
