friendship and loss
No, Michael is not Kensuke's son.
No1 knows
David Stimson
somewhere
yes
Nagasaki
Michael Morpurgo wrote "Kensuke's Kingdom" in 1999.
Kensuke's Kingdom is 179 pages long.
The book is titled "Kensuke's Kingdom" (Michael Morpurgo, 1999) and is available in store and online. (see related link)
no
In a cave.