Isekai ni Saku wa Yuri no Hana

Miyako Florence isn’t sad when her fiancée breaks off their engagement after two years. It’s all according to plan! Whisked to the world of her favorite otome game, Miyako frees herself from a dull noble to pursue her true soulmate: the game’s villainess Fuuka Hamilton. Proud Fuuka only has eyes for their mutual ex-fiancée! Miyako confesses her love to Fuuka and proposes that they run away together. Fuuka agrees on one condition: Miyako must make her say “I’m happy” in 14 days. With conniving nobles, strange diseases, and magical rituals pulling them apart, can Miyako win the villainess’s heart?

(Source: J-Novel Club)