Question 1

Where is Koto Koto?

Accepted Answer

Koto Koto is in Satte, Saitama, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of Lucky☆Star does Koto Koto appear in?

Accepted Answer

Koto Koto appears in OP of Lucky☆Star.

Question 3

Can I visit Koto Koto?

Accepted Answer

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

Question 4

Where was Lucky☆Star filmed?

Accepted Answer

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