Question 1

Where is Ken?

Accepted Answer

Ken is in Koganei, Tokyo, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of 100 METERS does Ken appear in?

Accepted Answer

Ken is a real place that appears in 100 METERS.

Question 3

Can I visit Ken?

Accepted Answer

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

Question 4

Where was 100 METERS filmed?

Accepted Answer

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