Question 1

Where is Komaruyama Castle Ruins Park?

Accepted Answer

Komaruyama Castle Ruins Park is in Nanao, Ishikawa Prefecture, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of Insomniacs After School does Komaruyama Castle Ruins Park appear in?

Accepted Answer

Komaruyama Castle Ruins Park is a real place that appears in Insomniacs After School.

Question 3

Can I visit Komaruyama Castle Ruins Park?

Accepted Answer

Yes. Komaruyama Castle Ruins Park is a real place you can visit. Check what it looks like on Street View before you go.

Question 4

Where was Insomniacs After School filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and Komaruyama Castle Ruins Park is one of those real places.