tralala

There's gonna be some gut-wrenching childhood memories, from both of them.

I feel like Hanan and his sister originally grew up in a mob family or somehow related to it, and got out when their parent died? That's how Haeran and jangwoo know each other, because he's clearly a mob heir.
I also feel the shot of jangwoo and his dad(?) in the rain, kinda alludes to them being connected to their death.