I just managed to find the technical manual for the urusara from Malaysia. It turned out they use the same compressor on both units, and there is no additional accumulator in the urusara. So since on a dual-swing compressor, the accumulator is part of the compressor assembly, both should have the same accumulator size.

The urusara can be charged with up to 1,64 kg R32. With 20g/m additional charge this boils down to an initial charge covering 15 m anyways. So I would assume that charging 100 g extra and using a pipe run of 20 m should also work on the European version, the Ururu Sarara.