If you're looking for manga similar to Kokoro no Program (Doujinshi), you might like these titles.
A secret social experiment is led by two Japanese engineers, having an android every move, expression and decision decided through a majority vote from a collective of ca. 3000 randomly chosen people. The vote system offers the opportunity to any member of the collective to set forward his/her proposition. The 3 most proposed actions as well as two propositions made only once are submitted to the majority vote.Rules and systems have been set to ensure the dynamism of that community, and to prevent identification of people and places where the android evolves in modern-day Japan. And so the Dēmokratía android came to life.
Metropolis is a grand high-tech city-state populated by humans and robots alike. It is in these streets that Detective Shunsaku Ban and his sidekick Kenichi search for the rebel scientist Dr. Laughton who unbenounced to them, is developing a super android named Tima as a tool for the Duke of Metropolis. What starts out as a normal case turns into mayhem as the scientist is murdered, and the true plans of the Duke are finally revealed...
Includes the following chapters:
A world where androids and humans co-exist, Aka Okachimachi was abandoned by his parents because he "A Helper-roid was more useful than him", he needed a job in order to live, due to some circumstances he was offered the job of being a caretaker for a large apartment building with some apparently peculiar tenants.
Onodera Nanami, elated from her third date with her new boyfriend, arrives at her apartment to find an strange, but extremely handsome boy with big ears welcoming her home as "Mistress!" Bewildered, Nanami soon finds out her genius older sister decided to test her new companion robot prototype called "D-46" on her...who happens to be this cute, puppy-like boy at her doorstep. Will Nanami stay true to her boyfriend, or will this android steal her heart away?
Set in the far-future in 28XX, this series of interconnected stories follows the relationship between humans and androids. Two twin brothers, also androids, are "puppet masters." Arashi (Storm) has the ability to animate androids or "dolls" for a specific purpose and Shizuka (Quiet) can shut them down after they have fulfilled their roles.