Question 1

Where is Takasaki Arena?

Accepted Answer

Takasaki Arena is in Takasaki, Gunma, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of Narenare -Cheer for You!- does Takasaki Arena appear in?

Accepted Answer

Takasaki Arena is a real place that appears in Narenare -Cheer for You!-.

Question 3

Can I visit Takasaki Arena?

Accepted Answer

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

Question 4

Where was Narenare -Cheer for You!- filmed?

Accepted Answer

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