"The back of it is complicated" — and there's no back alley

Where the picture shows up in 뒤

1. 1

   the side your back faces

   건물 뒤에 주차하세요.

   geon-mul dwi-e ju-cha-ha-se-yo

   Park around the back of the building.

2. 2

   the later side of a line

   제 뒤에 서시면 돼요.

   je dwi-e seo-si-myeon dwae-yo

   You can stand behind me.

3. 3

   the later side of time

   그 얘기는 뒤에 다시 할게요.

   geu yae-gi-neun dwi-e da-si hal-kke-yo

   Let's come back to that later.

   Behind in space becomes later in time, with the same word.

4. 4

   the side out of sight

   뒤에서 도와주는 사람이 있어요.

   dwi-e-seo do-wa-ju-neun sa-ra-mi i-sseo-yo

   Someone is helping from behind the scenes.

5. 5

   the side that doesn't show

   이 일은 뒤가 좀 복잡해요.

   i i-reun dwi-ga jom bok-ja-pae-yo

   There's a complicated backstory to this one.

   Not always negative — it can simply mean there's history behind it.