Burakku Gakkou ni Tsutomete Shimatta Sensei

Burakku Gakkou ni Tsutomete Shimatta Sensei summary:

The largest rise of Dark Skin Gyaru's of this century! The start of high school life with best and strongest girls out there!! High School Teacher Imada Sasamichi has been assigned to work there at this school, only to find out that everyone in the class is a dark skinned gyaru!!!! Kuroi, Kuroiwa, Kuroiso...all the names are Kuro (Black)!!! Meanwhile, Kuroi Mariko already fell in love with her sensei...!? It's the start of these lust-filled girls straight love-attacks on Sensei's life!