Finding existence and getting rid of loneliness is the core proposition that people cannot avoid living in the world. In order to resist loneliness, we have to look for existence, and in order to confirm our existence, we have to look for companions. The anime "Grim Reaper" is ostensibly about the bondage between people, especially between their companions, but at a deep level, it is about finding the meaning and bondage of living, and getting rid of eternal loneliness.
Everyone is lonely and unique from birth, and the same of these uniquenesses guides some people to come together, which is the peer and the group.
In large terms, there are corpses and worlds that are gathered together because of similarities and differences in their own state of existence, and in small cases, there are Bavent and The Perfectionists who have the ability to converge, or a group of families, sword beasts, and blue-dyed groups that are gathered together because of the same belief and goal.
The motives of the conspiracies of Bavent and the Perfectionist, though not identical, cannot escape the causes of loneliness and betrayal. They form lonely groups with hatred, plotting revenge and rebuilding the world they want.
But all this was wrong in the beginning, and hatred never gave a solid faith, but only a little paranoia. After being born, the Bavents were neither recognized by the god of death nor rejected by the humans around them, and what they gained in their long lives was not peace but gradually growing hatred. Therefore, they wanted to take revenge on the God of Death and destroy the corpse soul realm. While their abilities and heterogeneity leave them alone, they cannot cherish the uniqueness that the creators have given them, and live gratefully, simply blaming the irresponsible creation of Death—their own lonely, abandoned, simple dualistic causality.
Silver City, the leader of the Finishers, also felt betrayed by the corpse soul world's surveillance and control of him, and finally chose the path of gaining more powerful power and making enemies of the God of Death. Silver City finally said this when he died:
If I swap places with you, will my choices and endings be different?
I think Silver City is also generally envious of a family, envious of him to have such a strong heart and such a strong backing, but also by his own strength to get the recognition of the corpse soul world, and even changed the stale rules of the corpse soul world.
And it is also at the end of their lives that the finisher realizes that uniqueness and loneliness have created a different kind of connection between them, and this bondage is the salvation that God has given them.
Speaking of one household, Silver City's questioning also shows the dark side of the existence of the corpse world, that is, the prevention and incomplete trust of human beings. And the family itself has also questioned the intention of captain Fuzhu to give him the death god agent certificate, but the family is a person who will not waver if he recognizes him as a partner, so he always regards the corpse soul world as a partner who fights side by side, saving the corpse soul world several times at the time of life and death, and even becoming a bridge between the corpse soul world and the present world, breaking the strict rules and regulations of the corpse soul world that do not trust human beings.
Although concepts and regulations are pre-existent, people are always a powerful force to break these barriers. The character of Shiraya is a strong testimony to this interaction, and the original Shiraya has always fought only to obey the rules and fight only for the reputation of the Shiraki family, and is an almost cold-blooded character. But all this gradually changed when Kurosaki Ichigo invaded the corpse realm, Bai Ya saved Rukia from Blue Dye, allowed Rukia and others to go to the void circle to help a family save Inoue, and lent his own power to a family to restore the power of the Grim Reaper, all of which injected new vitality into the character, and the ice between rules and human feelings gradually melted.
Just like Kurosaki Kazugo, because of the combination of three special forces in him, his birth must be a burden forward, and when he gains great power, he must also bear a huge responsibility in self-doubt and being suspected by others, he never questions existence itself, but constantly creates new existence by virtue of the strength of himself and his companions, realizes his own life and the redemption of the loneliness of others, and weaves a tight web between people, that is, bondage.