Angnyeoui Mungujeome Oji Maseyo!

What’s a girl to do when she wakes up in the body of a villainess? Meldenique Babelloa is a supporting character in a romance novel starring her fiancé, Duke Lennox Hessman, and… her sister, Sheria! Heartbroken, she eventually dies a tragic death as a villainess… or so the original story goes. Determined not to follow the script, Meldenique resolutely abandons her old life and sets out to open… a stationery shop! Will she succeed in defying fate and building the stationery shop of her dreams?

(Source: Tapas)

Note: includes five extra chapters.