Raw ingredients and packaged goods from China, Korea and southeast Asia, including fresh vegetables from Thailand two or three times a week. They're in the basement of the Ameyoko Center Building, the large triangular building near the northern end of the Ameyoko arcade, under the train tracks south of Ueno station. Next to Murachin in the same basement are two other shops, Arai and Nozawaya, with similar items for sale.