Cheonghonharago Guhaejun Geon Anieonneunde

An ordinary woman is reading her favorite novel on her way home when she gets into an accident. As she loses consciousness, she hears a voice say, “my name is Elsia Artize. Please save him for me!” When she awakens, she finds she’s become Elsia herself! Destined to die early, the new Elisa knows the only way to escape death is to save her crush, Prince Ixion, from assassination. Though she succeeds and is now ready to live her own life, the prince complicates things when he proposes marriage!

(Source: Tapas)