When I heard the end of Metamorphosis on audio books, I was sure I was missing a CD. The ending left me hanging. Did the man never get turned back into a man? Did his family rightly move on and past him, forgetting him, burning the bridges?
I got the book. And the ending was the ending.
It disturbed me. But the more I thought about it, the more it made sense. The brother’s metamorphosis — never explained — into a bug brought about a positive transformation in his father, mother and sister. He died, and it brought them back to life. Just like the metamorphosis of a bug. The worm must die for the butterfly to come alive.

Only when her brother dies can the sister start her own grown-up life.
The novela, filled with angst of rejection, ultimately explores the need of sacrifice for others to succeed. It is not a Christian parable, but there are elements of Christian narrative in it. Christ had to die to bring out the best in all of us.