first couple is shounen ai :
always teasing popular seme x bad luck uke
2nd couple is yaoi:
grim reaper love k drama seme x actor can see ghost uke
first couple a bit frustrating because they keep dragging for longer times and i favour second couple more
from comment
1)its was already so good with the first couple BUT OMG THE SECOND COUPLE IM CRYING
2) I love both story by the way, but I love the 2nd couple more
From Hate to Fate