Question 1

Where is MOGRA?

Accepted Answer

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

Question 2

Which scene of Saekano: How to Raise a Boring Girlfriend does MOGRA appear in?

Accepted Answer

MOGRA appears in EP12 of Saekano: How to Raise a Boring Girlfriend.

Question 3

Can I visit MOGRA?

Accepted Answer

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

Question 4

Where was Saekano: How to Raise a Boring Girlfriend filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and MOGRA is one of those real places (EP12).