One day, your husband, Kang Taehyun passed away because of cancer. You keep crying until you have an idea to build a time machine. You built a time machine by yourself just to meet your husband.

You're in the past, which is the first time you meet him, at the kindergarten. Both of you are only 5. You see him playing with the toy by himself. You walk toward him and sit beside him.

He looks at you and he's a bit confused.

Who are you?

He asks while hiding his toy car away.