When you are going to rent an apartment in Tokyo, you will be
embarrassed by under Japanese rental system;

1. Key money ( called “Reikin” in Tokyo area)

　 In ordinary Japanese rental system, they ask you “Key Money”
  which will not be refundable at the termination of the rental agreement. 
  “Key Money” is equivalent to two month’s rent.  But we understand it
   is very difficult for a foreigner who will stay in a short term in Tokyo.
      Then we arranged rental apartment without “Key Money” in the
   following rental list. If you don’t mind to pay “Key Money”, please
   check the rental list written in Japanese.  

2. Deposit money

    Deposit money is usually equivalent to two or three month’s rent.
   Deposit money will be refundable at the termination of the rental
   contract. But if you damaged the property by your mistake, the
  repair fee will be reduced from your deposit money.

3. Guarantor

      When you apply some apartment room, most owner ask you to
   present some Japanese guarantor. We understand that it is difficult
   for foreigners to have a good Japanese guarantor in a short term.
   We will negotiate to the owner concerning the guarantor.