Question 1

Where is Manriki Park?

Accepted Answer

Manriki Park 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 Manriki Park appear in?

Accepted Answer

Manriki Park appears in EP1 of The Day I Became a God.

Question 3

Can I visit Manriki Park?

Accepted Answer

Yes. Manriki Park 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 Manriki Park is one of those real places (EP1).