Question 1

Where is Square park of water?

Accepted Answer

Square park of water is in Koto, 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 Square park of water appear in?

Accepted Answer

Square park of water appears in EP3 of Negative Positive Angler.

Question 3

Can I visit Square park of water?

Accepted Answer

Yes. Square park of water 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 Square park of water is one of those real places (EP3).