Wild girl / 这个小姐有点野 / 칼과 드레스
Rank: 70070th, it has 0 monthly / 30970 total views.
Authors: Kidari studio / Coyo
Genres: Manhwa / Action / Comedy / Fantasy / Isekai / Magic / Romance
Status: Ongoing
Summary:
After losing to the demon king, her soul got swabbed with a weak girl. Tired of her former life, she decided to live the rest of her life as a normal girl instead! Will our heroine able to live a normal life? Or is there something more to this new life she received? 

p.s, not a gender bender.
Resources:
http://ridibooks.com/v2/Detail?id=102009559