Question 1

Where is Kaishinki?

Accepted Answer

Kaishinki is in Zushi, Kanagawa Prefecture, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of Don't Toy with Me, Miss Nagatoro does Kaishinki appear in?

Accepted Answer

Kaishinki is a real place that appears in Don't Toy with Me, Miss Nagatoro.

Question 3

Can I visit Kaishinki?

Accepted Answer

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

Question 4

Where was Don't Toy with Me, Miss Nagatoro filmed?

Accepted Answer

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