Questions Concering "Underground"

1) Do you think Murakami would ever consider doing a follow-up on each living victim pertaining to their current mental state after having to relive the moments of giving information needed to create the book the way it is?

2) Does Murakami sincerely consider those who are unwilling to answer questions pertaining to the sarin gas attacks? How?

3) In what ways does Murakami seem intruding of privacy of the interviewees? First and foremost, is Murakami even obligated to ask questions to willing participants when he is inexperienced of such disastrous events, just so that his book could come to life?