Question 1

Where is Sen City Plaza?

Accepted Answer

Sen City Plaza is in Chiba, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of My Teen Romantic Comedy SNAFU Climax! does Sen City Plaza appear in?

Accepted Answer

Sen City Plaza appears in OP of My Teen Romantic Comedy SNAFU Climax!.

Question 3

Can I visit Sen City Plaza?

Accepted Answer

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

Question 4

Where was My Teen Romantic Comedy SNAFU Climax! filmed?

Accepted Answer

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