drama where couple starts off together?

Are there any dramas where the main couple starts off together?

i'm not asking for dramas where each main char are in a relationship but main characters are in a relationship with each other

it could also be dramas where couple gets together very quick

 I Need Romance
 I Need Romance 2
 It's Ok It's Love (the romance starts pretty early)
 Koizora
 Kuzu no Honkai
 The World That They Live In (they basically start off when they have broken up, but get back together pretty soon) (I think I remember right, it's been a long time since I have watched it)
 Bubblegum (the couple starts off as best friends)
 Cheese in the Trap (he asks her out in ep 3)
 Goblin
 The Time We Were Not In Love (again best friends)
 Last Cinderella
Love O2O
Marriage Not Dating (well, they pretend to start dating, but everything is believable) 
 Nigeru wa Haji da ga Yaku ni Tatsu (We Married as a Job)

Tomorrow With You, Cheese In The Trap