The World Will End in Ten Days (Jenlisa)

A story in which a woman, after learning that the world would end in ten days, sets out to finish one last thing: murder her ex-girlfriend.

However, she ends up befriending, and spending the world's final days with the little sister of her ex-girlfriend instead.

Jenlisa Adaptation
Neither the picture nor the content belongs to me.
ALL CREDITS BELONG TO THE AUTHOR AND TRANSLATOR