"In this world where everything seems amiss, I choose to breathe air from it, as long as you're in it."

"Hi. I'm Chaeyoung. I suffer from short-term memory loss."

Mina's girlfriend Chaeyoung died. Mina believed that her life isn't worth living anymore. She decided to write her last words on her diary. She wrote: "Chaeyoung, forgive me and I love you." However, as she try writing the last page of her own life, something unexplainable happened. A sentence ends with a period, and so does life. She believed. But what if destiny writes another sentence for her?