Cremation is one of the Japanese funerals.
It is a convincing opinion that the cremation came with transmission of the Buddhism. This is associated with Buddha having been cremated.
As you see, it adjoins cemetery.
You will see the vent in the left side of central bulding's roof.
There are some reasons Japanese has cremation funeral.
Many Japanese people doesn’t believe in any religions, so they are not particular over the way of funeral. In addition, cremation is the easiest way of funeral.
Cremation is respected in the Buddhism which has constant power in Japan.
Crementation is strongly promoted in the
Jodo Shin Shu in particular.
Retracing Japanese funeral in the past, burial had been maintained in the early modern times.
That's because cremation was considered as an insanitary way in this period.
In this period, burial is the mainstream of Japanese funeral.
Burial is not prohibited in Japan, but considerinf sanitary aspect, government announces cremation is best way of funeral.
Because of progress of cremation technology, cremation spread drastically in Japan now.