It didn´t felt like an end AT ALL!! XD But I loved the whole concept of MARS. It was TRULY realistic, but it´s interesting seeing the mangaka´s point of view about human beings and their physological complexity. I also loved how the story talked about wounds, locking up yourself in your own world, protect and being protected, the life´s path and the magnitude of the people you meet in that path and their influence in that path, etc. Because sometimes it seems coincidence, fate or something unavoidable, but the paths of life are intertwined, for better or for worse.
What I also LOVED about this manga, is that it´s not all about sadness, or drama. It´s also about LIFE. The story also talks about art and races, the difference betwen them are enormous, but how two people from their little worlds, came with their special thing to each others world, and understood each other special thing, was amazing.
The art was AMAZING, it´s redundant to say it XD. Sometimes when I saw Rei I thought I was seeing a real person o.o! that´s how AMAZING! this manga´s art is XD
And is interesting to read the comments, because of the psychological background of the story, somehow you identify yourself with the story, like how deep the human nature is, the search for a safe place, etc
While I was reading the manga, I was hearing the City Hunter´s Dorama OST, it was the perfect background music, it fit so perfect the storyline and the scenes ^^
PS: I would love to see Kira´s baby ^^