Annoying Yu
This is Kawaguchi Hidetoshi. This is my humble answer to the question.
To think about the aftermath of death in the Soto sect, you can ask a little bit about it according to the Soto sect's house funeral etiquette.
In the wake, there is a description of “breaking through the roots of human life and death and quickly entering the Kukai of Nyorai Homei,” so if you get out of reincarnation and enter the “Kukai of Nyorai Homei,” it can be thought that it is written that it will lead to Kukai where Buddhism is described as clear as a treasure, in other words, the Kukai of Buddhism, a treasure trove of Buddhism.
Also, at the time of the funeral, it says “sentient beings, if you receive the Buddha commandments, that is, you rank among the Buddhas. There are lots of people like Gi Daikaku. In “Truly Be a Child of the Buddhas,” it is stated that if you firmly repent for your sins and receive the Buddha's commandments (precepts determined by the Buddha, Mahayana Commandments), you will be on the same level as the Buddhas. However, as a “child of the Buddhas,” it is only a plan, and I can understand that it will be necessary to work hard on ascetic practices to become a true Buddha.
In “Yamato nen” at the time of the funeral, there is a saying “enter the path of nirvana all the way” after cremation, and there are also words that if you let them enter the path towards enlightenment and nirvana, they will be able to walk firmly in Buddhism.
Also, in Zen Buddhism, as it is called “seeing the attainment of Buddhism,” it “aims to find the heart of the Buddha (Buddha castle) that originally exists within oneself,” and paradise, hell, etc. express each state of mind, or are sometimes used as a convenience for that.
In any case, even if the six paths exist, at the end of the day, it is a place where you can capture them in your heart, so it is important to know what to do with that state of mind.
Buddhism teaches how to better adjust that state of mind towards enlightenment and nirvana, and I believe that any person who practices Buddhism can perform memorial services to lead to a better state by turning their own merits, even for those who are in a bad state of mind. At least, in Mahayana Buddhism, the premise is “for all sentient beings to be saved,” so the merit they practice will also be extended to those who are always in hell or hungry.
Also, since repentance and annihilation can also be done during daily work, I think that being able to work hard will reduce bad karma and contribute to accumulating good works.
Kawaguchi Hidetoshi Gassho