Question 1

Where is Swallowtail Ikebukuro?

Accepted Answer

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

Question 2

Which scene of My Dress-Up Darling does Swallowtail Ikebukuro appear in?

Accepted Answer

Swallowtail Ikebukuro appears in EP3 of My Dress-Up Darling.

Question 3

Can I visit Swallowtail Ikebukuro?

Accepted Answer

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

Question 4

Where was My Dress-Up Darling filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and Swallowtail Ikebukuro is one of those real places (EP3).