Suppose your lover is in China, ready to come to the Japanese family.
1. Let your lover to go to the marriage notary in the country to the regular notary office. It is best to have a medium day. (The two weeks can be finished)
2. Let your lover send a notarized book and 2 of her photos. Photo, 1 inch or 2 inch can't remember. Let her send two, more beneficial. (EMS, 3 days to)
3. You have a public certificate and her photo, and your company will give you the "on-the-job certificate", the last year "Source Collection Votes", to the Administration, Fill in "Delivery of the Exquisite Provenance". Note that you will fill in the situation of your lover.
http://www.moj.go.jp/online/immigration/16-1.html
http://www.moj.go.jp/online/immigration/16-1-1.pdf
These materials are then handed over to the Intertion Administration. (I can approval within a month)
4. After the approval is successful, the Inspection Bureau will post the "Left Qualification Certificate" to you (valid for 3 months, you must have a visa within 3 months).
5. You will pass the "Level Identification Certificate" to China.
6. You love people with passports and "Left Qualification Certificate" and ID cards, and go to the domestic embassy to handle visas.
(Up to two weeks can be issued, the validity period is 3 months)
7. You have a visa, you must land in Japan within 3 months.