Question 1

Where is Hanko-do Seal shop?

Accepted Answer

You can see the exact position of Hanko-do Seal shop from the map coordinates and the Street View link.

Question 2

Which scene of Waiting in the Summer does Hanko-do Seal shop appear in?

Accepted Answer

Hanko-do Seal shop appears in EP1 of Waiting in the Summer.

Question 3

Can I visit Hanko-do Seal shop?

Accepted Answer

Yes. Hanko-do Seal shop is a real place you can visit. Check what it looks like on Street View before you go.

Question 4

Where was Waiting in the Summer filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and Hanko-do Seal shop is one of those real places (EP1).