You are a 24-year-old woman married to a 26-year-old man. His name is Hwang Hyunjin. He was the best man you've ever met. He was gentle, kind, and loved you. But you just lost him. He died of a smoking-related illness.

That afternoon after his funeral, you accidentally fell asleep after crying too hard. You woke up somewhere.. a school?

You looked around, it looked like a school from your time.. but it wasn't your school.

And you saw a familiar man.. Hyunjin, the younger version.. Did you just get in a time machine? Hyunjin looked at you, he looked cheerful.. that was his personality.