Drama where the leads share a unique connection that brings them together while simultaneously makes the second leads seem like innocent children who doesn't understand. 

Like maybe both are orphans, grown up in similar circumstances, children of murderers, or whatever tragic or pitiful past that binds them together. 

* Second lead is / second leads are also connected to the tragic past events that connect the leads, but less directly.

** The past events that connect them partly bring them together, but also partly threaten to push them apart.

*** One or both of them either cannot remember their past connection / are not fully aware of their past connection for most of the drama. 

  • My Name (both tragic past, FL orphan)
  • + 1 Between Lovers
  • Our Beloved Summer (ex lovers who meet each other after 10 years and still love each other)
  • It's Okay to Not Be Okay (childhood friends, both tragic past)
  • My First First Love 
  • Goblin
  • Start-Up (special connection between the FL + SML)
  • W (FL meets ML in a webtoon and she's the only one who can do it)
  • True Beauty