Edit: looking back on it... Yeah, not that good
MC is asked to test a sex toy, that is made from a dead kid's body. He tests it profissionally (no sex or self-satisfaction usage). They robot seems to be unable to speak and only obey commands but after receiving the smallest of the caring he seems to starstruck by this behaviour towards him that he never felt.
This manga is probably going to follow the line of robot discovering feelings and the line of what is and what isn't morally okay. Hopefully we will have a lovely ending or a tragedy but good ending.
Sabi no Yume