Question 1

Where is Itagaki Bridge - fireworks?

Accepted Answer

Itagaki Bridge - fireworks is in Fukui, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of Chitose Is in the Ramune Bottle does Itagaki Bridge - fireworks appear in?

Accepted Answer

Itagaki Bridge - fireworks appears in OP2 of Chitose Is in the Ramune Bottle.

Question 3

Can I visit Itagaki Bridge - fireworks?

Accepted Answer

Yes. Itagaki Bridge - fireworks is a real place you can visit. Check what it looks like on Street View before you go.

Question 4

Where was Chitose Is in the Ramune Bottle filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and Itagaki Bridge - fireworks is one of those real places (OP2).