This is a list of all coops in japan:
- コープとうきょう (tokyo)
- さいたまコープ (saitama)
- ちばコープ (chiba)
- いばらきコープ (ibaraki)
- とちぎコープ (tochigi)
- コープながの (nagano)
- コープぐんま (gunma)
- コープにいがた (niigata)
- コープネット事業連合 (official website of coop)
This is coop of niigata: http://niigata.coopnet.or.jp/
Ibaraki coop: http://ibaraki.coopnet.or.jp/
You need first to join coop by registering using their website(in japanese): https://f.coopnet.or.jp/
Then a person will call you to take an appointment with you (japanese only). The person will come to your house and give you some papers to fill in, you need to give them your bank account number.
Once a week you can make an order (bread, butter roll and anything else you need), the items will be delivered to you the next week. Each week they will give you the catalog containing what they are selling and the order form. Each item in the catalog has a number, to order write the number of the desired item (for example the number of the butter rolls) on the order form with the quantity (how many do you want to take) and give it to the person of Coop the next week he will come to your house.
The shipping fees are not exceeding 200 yen. If you have a child under 3years old, the shipment will be free of charge.