If you're looking for manga similar to Miraigata Renai Danshi 46, you might like these titles.
PIPPI, a humanoid computer developed to predict earthquakes, estimates that a global-scale cataclysm will occur in eight years. Though the computer also announces that the accompanying danger of human extinction can be avoided by taking a series of specific steps, the process deviates so far from normality that people are thrown into a state of chaos and doubt.
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.
In a ruined world, a human girl, Lu, and a droid, Zet, live a humble life. Then one day, they encounter a mysterious new droid, Chrome... Now all three of them live together like a family, but then…
From a place in a different dimension from Earth, a world called 'Lote'. It is a world of androids, comprising a queen, princess, rook, bishop, and knights under the command of a main computer. However, the princess suddenly disappeared and the world of Lote falls into chaos. In order to find the princess, the head secretary, Dion, travels to our world, Earth. There, he meets a high-school student SeoYoon, and from this incident the life of SeoYoon is turned upside down...!!
About an android that can think and feel like a human being, and even has the ability to choose his owner...
Gifuko is a robot in the form of a cute little girl. Unlike other robots, Gifuko is able to feel emotions and learn new ones by experiencing them. She lives with a professor who always has a bear mask on and goes on daily adventures outside to learn new emotions. As she becomes friends with all the people in her town, she is able to sync up their emotions with hers and downloads it into her own data file. With each new friend she makes and every connection Gifuko makes with them, she becomes closer to becoming human.