How hard it is to get shared accommodations on rent?

I am moving to Japan this Saturday with my friend and the agent who first said that they will provide us with a shareable accomodation is now denying it and giving multitude of reasons that it's not possible.

He is saying we should aim for 2 different accomodations in the same building. This is very frustrating since we would need to buy 2 sets of things which we could have shared before.

Does anyone know if it is genuinely a hard find or they are just trying to avoid it?

by Ransomsumit