Question 1

Where is Okada Suisan?

Accepted Answer

Okada Suisan is in Naoshima, Kagawa Prefecture, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of Summer Pockets does Okada Suisan appear in?

Accepted Answer

Okada Suisan appears in EP1 of Summer Pockets.

Question 3

Can I visit Okada Suisan?

Accepted Answer

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

Question 4

Where was Summer Pockets filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and Okada Suisan is one of those real places (EP1).