One of the major issues international students face is opening a bank account in Japan. Many banks have a rule that you can only open a bank account if you have lived in Japan for at least 6 months.
However, a bank account is needed to pay rent, utility bills and so on.
A number of international students therefore turn to buying accounts.
Simply put, the outgoing international students sell their bank accounts to incoming international students.
But this practice is ILLEGAL!!
Bank accounts are personal property which cannot be sold to another individual!
Furthermore, bank accounts of international students are often the target of crime syndicates.
These syndicates purchase bank accounts from outgoing students and use them to store money earned from criminal activities.
They then sell the accounts to incoming students after they are done using the accounts.
Through this money laundering, the syndicates are able to cleanse the money earned from sale of drugs, murder, etc; thereby erasing criminal evidence and getting free of the law.

It is important for students to be careful.
If caught, sale of bank accounts is punishable by the law.
You will be sentenced to maximum 1 year of imprisonment or a fine of 1 million yen, or both.
Not only that, you will also never be able to enter Japan again.
Let's not involve ourselves with the sale of bank accounts by closing any accounts that you no longer need!