I finished the game and I have to say that it was one of the most thought provoking games I've played recently, the other being The Lost Crown.
The ending took me by surprise, and immediately had me rethinking all that happened in the game. In many respects it is a sad story, but it represents the determined achievement of your older brother. That you, the younger brother (in the game) make it to the end, shows that he was successful in his endeavors.
Occasionally visiting Uru Live (KI 00637228).