A bloodstained man stands in front of a terrified girl. He proclaims his love for her and makes this ominous declaration: A year from now, she will either die alone or will be with him forever. Now, rumors abound about the cursed girl that causes any boy who proclaims his love for her to die. Join us to discover the mysteries of Metronome.

"I think about the same things every day. I hope for the same things every day. Perhaps I was born in the wrong dimension; I feel that this is my true world... Maybe the world I was first born in was fake. Because- take a look, this world is beautiful. Only in this world do I feel happy."

From Dazzling Scans:
A female manhwa artist lives with her two adorable pets, a dog named Diend and a rabbit named Shuba. However, Diend's scary demeanor and over-protectiveness towards her owner leads others to believe she's dangerous and vicious.