• Opening credits: Should I Hug Or Not - B2ST
• Waking up: Goodbye - B.A.P
• Falling in love: Unripe Apple - HyunAh ft. Ilhoon (if only this happens...lol)
• Fight song: Clenching a Tight Fist - B2ST
• Breaking up: Warrior - B.A.P 
• Getting back together: Irresistible Lips - BtoB (omg...iTunes know what it's doing)
• Wedding: Catch Me - TVXQ
• Birth of child: No - Yoseob
• Final battle: Power - B.A.P
• Death scene: How Nice Would It Be - Lunafly (uhm...JUST WHAT...)
• Funeral song: I Am The Best - 2NE1 (LOL of course this would be the best funeral song)
• End credits: Everything is Pretty - Youngjae & Sunhwa (OMG GUISE please go listen to this song if you haven't, it's beautiful!)

[adapted from Tumblr]