My friend went to Japan before and he told me about a giant hobby/toy store which is 7 floors, and all 7 floors are filled with 100% toys. Each floor is different 'genre', like 1 floor all mecha and plamo kit, 1 floor all figures, etc. Im not sure of the name and even the location. That place should be worth a visit, gotta wait and see if anyone here knows the name of that place. Otherwise Mandarake have their own physical stores which is also worth visiting, they have 3 outlets.