Question 1

Where is Lake Shirakaba?

Accepted Answer

Lake Shirakaba is in Chino, Nagano, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of Touring After the Apocalypse does Lake Shirakaba appear in?

Accepted Answer

Lake Shirakaba appears in EP12 of Touring After the Apocalypse.

Question 3

Can I visit Lake Shirakaba?

Accepted Answer

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

Question 4

Where was Touring After the Apocalypse filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and Lake Shirakaba is one of those real places (EP12).