It's been a long time since I've commented here but I need help with finding a old hentai manga which revolved around a man recently breaking up with his girlfriend, and is returning home, but on his way back he just so happens to find a girl on the street. He picks her up and she awakens and calls him master and as usual she tries to prove her worth which he finds a pain but enjoys being with her and they have sex and yada yada yada. But then on the sequel, she gets shut down for years with no hope in sight of returning back which is just a test to see whether her master would hold real love towards her even if she is a robot. After a conversation with her creator and giving an answer that simply shows the emotion and will of a real human, he allows her to awaken again with the help of her master. Awakening they have sex, have a happy life together till her master is old, soon he dies and she herself follows along with him to death showing their commitment to one another.
Srry if the summary is bad I'm not great at summaries. xD
P.S I want to read it for the feels again.