Question 1

Where is Polystar Co., Ltd.?

Accepted Answer

Polystar Co., Ltd. is in Isesaki, Gunma, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of Nichijou - My Ordinary Life does Polystar Co., Ltd. appear in?

Accepted Answer

Polystar Co., Ltd. appears in OP14 of Nichijou - My Ordinary Life.

Question 3

Can I visit Polystar Co., Ltd.?

Accepted Answer

Yes. Polystar Co., Ltd. is a real place you can visit. Check what it looks like on Street View before you go.

Question 4

Where was Nichijou - My Ordinary Life filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and Polystar Co., Ltd. is one of those real places (OP14).