Kurama makes a comeback in the manga. The return is well-plotted and adds an interesting twist to the story. It also ties up some loose ends and brings new possibilities.
Kurama's death in the manga is final. There's no indication or plotline suggesting that Kurama comes back to life. The story moves forward without this happening.
He could meet his past self. It would be really interesting to see how he interacts with his younger, more naive self. He might try to give advice to his past self, like how to better control his power or avoid certain dangerous situations.
"Be back in ten minutes" is a common expression used to indicate that someone will be back in ten minutes. We can conclude that according to the contents of documents [2] and [3],"he will be back in ten minutes" can be translated as "He will come back ten minutes later." "。Therefore, the correct translation of the answer to the question "be back in ten minutes" is "He will come back ten minutes later." "。