What is the 'official name' for Koreatown in Tokyo and how do you get there from Roppongi station?

Question:

Hi, i am going to Tokyo, Japan soon and i am staying somewhere near Roppongi station. Being an avid k-pop fan, i naturally want to look for places that sell k-pop stuff (girls' generation<3) and i found this place called 'Koreatown'? I'm not so sure about this though so i need someone's help (preferably a local or someone who has gone to that place before) ... I need to know what the 'official name' for this place is and which metro station it's nearest to, and how to get there from Roppongi station. If you can provide a map or something of 'Koreatown' that would be great. thanks :)

Answer:

Korean town is the official name.

It's in Shin-Okubo, Tokyo.

If you are in Roppongi, take subway Oedo line to Shinjuku station and then, take JR Yamanote line to Shin-Okubo station.