DANSHI KOKOSEIDAKEDO GYARU NI TS SHIMASHITA

Danshi Kokoseidakedo Gyaru ni TS Shimashita summary:

Shunpei, a loner high schooler, 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 Shunpei, who's never even talked to a girl, let alone a gyaru.
It's the beginning of an introverted high school guy => gender-swapped gyaru comedy!
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- (https://seiga.nicovideo.jp/comic/67976)

Shunpei, a loner high schooler, 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