Where is Joseph?

One day, me and few friends went to another town to accompany Oppa met his buddy (Let's just called him Joseph). He is Oppa's good friend from middle school and eventually went to different high school. Up until now they are still buddy and chatting once in a while talking about anime and games. And for us, we only met Joseph once or twice.
Well, Oppa want to meet Joseph not because he missed him or anything like that, but because Oppa want to copy animes and movies from him. Once we arrived, Oppa took the lead to meet his buddy's mother.

Oppa  : Hi aunty, how are you? how's business going?

Me and friends were just standing there.

Aunty : Hi Oppa (let's just pretend this aunty called him so). When did you come back? Did you finished your study?

Oppa : Yeah, it has been *bla bla bla* (not remember) since I come back from Jakarta. And bla bla bla bla bla (Just a conversation that I don't remember)

After 10 minutes...

Oppa : O yeah Aunty, where is Joseph (his buddy's name)?

Aunty : Huh? you want to meet Joseph? He is at the next door.

Oppa : *Confused* Next door?

Aunty : Yeah, he lives next door.

And it turns out that Oppa were talking to Joseph's neighbor and the aunty who know Oppa is Oppa's relative.