As you asked, when it comes to things after death, there are things that show the world that progresses every 7 days after death, such as Juou Sanshou. Also, in Nichiren Shonin's calligraphy, it also touches on things after death, saying, “In the Sanzu River, it becomes a large white cow cart, in the mountain of death, it becomes a light, and a bridge to reach a sacred mountain.”
It's not like I never talk about things after death, and I believe that the spirits of those who died are immortal, partly due to the influence of my parents. Therefore, I can be sure that there is a world after death.
However, what happens when you die is unclear. “Death” is simply the destruction of the body, and I think the soul and consciousness continue as they are, but at least, I don't think it can be recognized in this three-dimensional world, and if you know whether it's more complicated or simple, you get rid of the fear that Tomoya says. I guess we can talk.
However, why didn't Buddha say that, so the vague answer, such as that there is no afterlife, is that we don't know what happened before we were born, and we actually forget it even though we all know it, but we make an effort to find meaning in living by forgetting it. Similarly, even though I know about things after death, I've forgotten them. I think it might be.
However, the saints called masters probably know (understand) the mechanism. Therefore, since I know the past and future, I was probably able to live without anxiety in the present. However, it means that it is for people's salvation, not for individual pleasure.
The world after death spans a wide range of topics, such as pictures of hell and stories about the Pure Land of Paradise, all of which are messages to people living now, and furthermore, these are not after death, there is hell in this world, and I have experienced moments of happiness, pleasure, peace, and happiness. I think the reason I didn't talk about what happened after death is that I live as a human being in order to make an effort, work hard for the present, and recognize various things.
No one can guarantee that you will be able to go to paradise after death or that you will go to hell. Until now, the dead have returned and I've never heard “Oh, Paradise was good” (there was a song like that a long time ago), and “Muken Jigoku was like this.” If so, things after death have long been elucidated. But I think the importance of living now lies in the fact that this is not the case, and why.