Chikyu no Otoko

Originally he was designed to help humanity to survive, but he was a man who struggles with his own problems to even care about humanity. As someone who couldn’t understand sound and didn’t know about conversation by voice, he wanted the world to be more simpler. He didn’t hate humans but he simply didn’t want to deal with them. But he had abandoned himself along with humanity. Everything had become too troublesome, so he physically cut the ties for mutual aid.

He claims that he flown to the moon to lock himself up there so that no one can bother him, he wanted to be in a world at peace without sound, where he could simply look at information from the networks in a small room by himself. But the true reason he had flown to the Moon was to become human and learn about love.

(Source: TYPE-MOON Wikia)