Question 1

Where is Masudaya?

Accepted Answer

Masudaya is in Yashio, Saitama, 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 Masudaya appear in?

Accepted Answer

Masudaya appears in EP8 of My Dress-Up Darling.

Question 3

Can I visit Masudaya?

Accepted Answer

Yes. Masudaya 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 Masudaya is one of those real places (EP8).