Question 1

Where is Rainbow Promenade?

Accepted Answer

Rainbow Promenade is in Minato, Tokyo, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of Negative Positive Angler does Rainbow Promenade appear in?

Accepted Answer

Rainbow Promenade appears in EP3 of Negative Positive Angler.

Question 3

Can I visit Rainbow Promenade?

Accepted Answer

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

Question 4

Where was Negative Positive Angler filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and Rainbow Promenade is one of those real places (EP3).