Danshi Kokoseidakedo Gyaru ni TS Shimashita

Junpei, a loner high school boy, became a gyaru after saving the God of Gyaru from drowning. Through his mother's connections, he was able to transfer to an all-girls school, but it was stuffed to the brim with gyarus! Every day is a sensory overload for Junpei, who's never even talked to a girl, let alone a gyaru.