Question 1

Where is Tokiwa Building?

Accepted Answer

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

Question 2

Which scene of A Sign of Affection does Tokiwa Building appear in?

Accepted Answer

Tokiwa Building appears in EP11 of A Sign of Affection.

Question 3

Can I visit Tokiwa Building?

Accepted Answer

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

Question 4

Where was A Sign of Affection filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and Tokiwa Building is one of those real places (EP11).