Remember this?
Being proud of your “future self”
This is probably the first time ever that someone apologized for the things that happened, and look at Clive’s reaction
We know Dimitri has an office near the top of the Towering Pagoda:


But notice how there appears to be an even larger office above his that isn’t accessible in the game:

And who might that belong to?
Professor Layton Locations | Future London
Beneath a stagnant yellow sky lays a city that claims to be the London of the future. While many features remain recognizable, the atmosphere is strangely different from the London Layton and Luke left behind when they first entered the clock shop on Midland Road. Giant cogs, running wires, and steaming pipes provide an industrial feel, like a giant machine in motion. Spires pierce the ether, but even these fall short of a dark, towering pagoda that stands at the edge of the city’s Chinatown. Across the Thames, an enormous facility and single lighthouse—all strongholds of the city’s darkest secrets. From sunlit arcades, to narrow, seedy allies, it is a sprawling metropolis both familiar and alien.