you and seungmin has been best friends since long ago and now the both of you are sitting on your bed reading books quietly until seungmin suggests to sleep

When you wake up, you realize you're in the book you just read, looking to your side, you see seungmin sleeping peacefully

In the book, there are two friends who helps each other with their problems in life, and eventually falls in love, so you're supposed to live as that character and fall in love with seungmin to leave the book