Dear Doyoung,

I hope this letter finds you in good health. Thank you for being my best friend and accepting me and protecting me from harm. Thank you for staying up late at night to listen to my rambling and holding me when I can't stop crying.
I'm sorry for what I am going to do, it was too much this time. Don't mourn me though, I did this to myself and I am sorry to leave you.
I love you very much, watch over the others for me.

Love, Jungwoo