Do Japanese people usually have funerary objects when they die?

No, the Japanese don't have this custom.

1. Relatively speaking, Japanese people do not attach importance to the construction of their own (and ancestors') cemeteries as a whole, which may be because they advocate the simple spirit of returning to nature after death and have a naturalistic tendency. These cemeteries are not comparable to those of similar status in China at the same time or other memorial sites. According to China people, it is simply a wild grave in the countryside. People with high status in China built tombs after death, and even started to build their own tombs before they died. At the same time, they also emphasized their identity and status before their death with the specifications of tombs, which was in sharp contrast with these Japanese tombs.

2. Generally speaking, except for a few well-known historical figures with high political status, the size of these cemeteries is not necessarily related to their status before their death (such as official positions, fiefs, reputation, etc.). We can see from a lot of information that the tombs of several Muromachi shogunate generals and their relatives are simply not worth mentioning and can be described as quite simple.

Third, there is no systematic difference between the cemetery specifications of people who have failed in political struggle, lost their reputations and even been regarded as sinners and the "positive figures" in the struggle. Sometimes, the graves of these "sinners" are even more luxurious than those of high-ranking names.

Fourth, many of these graves are mixed together, or in the corner of the humble country or city. When watching Japanese movies and TV, we can occasionally see such a cemetery and such a small support tower.

5. Most of these cemeteries are open, exposed on the ground and not hidden. Many tombs of feudal dignitaries in China are hidden underground, fearing that others will rob the tomb for revenge, hoping to be quiet after death. Judging from these Japanese cemeteries, there are not many things in them. Unlike China, there is no need to be afraid of other people's grave robbing, and it seems that they are not afraid of the enemy's malicious destruction. This shows that the Japanese attitude towards the cemetery is awe rather than harassment. Japanese history is also different from China's habit, and there is no such habit as "whipping the corpse" to retaliate against people after death. If I am a descendant of Akechi Mitsuhide, according to the thinking of China people, I must be very afraid that others will destroy the grave of my ancestors, so I must hide it.

6. The Warring States period mentioned here is probably in the 16th and 17th centuries, four or five hundred years from now. After such a long time, the tomb can still be preserved, which fully illustrates a problem, that is, people respect the tomb. The graves of political enemies and enemies with tit-for-tat political views and interests can be preserved without being destroyed. If you are in China, you will dig up the enemy's ancestral graves, and eventually you won't find them anywhere. It is incredible in China, too. Celebrities like Japanese can go everywhere to research the graves scattered in the countryside four or five hundred years ago (and during the Warring States period, which was full of killing and hatred).