Artist. Fomerly tagged as nabiiro.
Japanese name: ้่ฒ ็
Reading in the blog (June, 2011): ใซใณใใ ใใ (Nibiiro Kuro)
Reading in the artist's pixiv profile: ใซใณใใ ใใใ (Nibiiro Shizuka)
Circle name: ใฎใตใใใผใ
Site name: ใพใใๅฑ.exe