SUMMARY
The class rep who becomes a gyaru only during summer vacation is a Manga/Manhwa/Manhua in (English/Raw) language, SUGGESTIVE series, english chapters have been translated and you can read them here. You are reading The class rep who becomes a gyaru only during summer vacation chapters on ManhwaZ, fastest updating comic site. The Summary is
Natsuyasumi No Ma Dake Gyaru Ni Naru Iinchou