There are tons of underground shopping malls in Osaka and this one in Namba is particularly good with a wide selection of clothing, accessories and home decor at cheap and affordable prices.
There were lot more stuff sold for women than for men. Walking here can take you three hours minimum without stopping. There were so many things to look at and wonder if you should ever buy them.
You can find everything in Namba! We especially loved the bakeries were we found food for breakfast every morning. Some of the store clerks speak broken English, but they were all extremely helpful and polite.