In 1996, Tokyo and the 23 Wards of Tokyo mutually agreed to carry out a deed that gave protection to homeless people. Until each ward decided on a residence for their homeless population, they entrusted their homeless residents to Sanya. The measure was to temporarily give custody, but problems such as who was the guarantor of the homeless existed. After that once more the wards could not find that many apartments to take over for their homeless, so more homeless were taken to Sanya, and just like that, left alone. Over a long period of time, many people became left with an uncertain address. From this sort of action, Sanya is ridiculed as the “district of abandoned people”