Question 1

Where is Mixalive TOKYO?

Accepted Answer

Mixalive TOKYO is in Toshima, Tokyo, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of Durarara!! does Mixalive TOKYO appear in?

Accepted Answer

Mixalive TOKYO appears in OP of Durarara!!.

Question 3

Can I visit Mixalive TOKYO?

Accepted Answer

Yes. Mixalive TOKYO is a real place you can visit. Check what it looks like on Street View before you go.

Question 4

Where was Durarara!! filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and Mixalive TOKYO is one of those real places (OP).