Question 1

Where is 403 Yamanashimanrikiten?

Accepted Answer

403 Yamanashimanrikiten is in Yamanashi, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of The Day I Became a God does 403 Yamanashimanrikiten appear in?

Accepted Answer

403 Yamanashimanrikiten appears in EP1 of The Day I Became a God.

Question 3

Can I visit 403 Yamanashimanrikiten?

Accepted Answer

Yes. 403 Yamanashimanrikiten is a real place you can visit. Check what it looks like on Street View before you go.

Question 4

Where was The Day I Became a God filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and 403 Yamanashimanrikiten is one of those real places (EP1).