AnimeSuki Forum - Not lives -ノットライヴス-

http://i.imgur.com/TfJoQEq.jpg

Quote:

Mikami is only in high school but he is a game designer genius. He has created many popular games ranging from RPG to action to even puzzle games. One day, he decides his next project will be a romance game so he begins to gather research material that will help him make another hit game. But when Mikami gets home, he finds a game called Not Alive that he doesn’t remember getting and curiously, he plays the game and the next thing he knows, the CD goes inside him and he has turned into a girl!

The manga serialize on Monthly Comic Dengeki Daioh(published monthly on 26th/27th of each month), so far there're 33 chapters released (as of August 27, 2014), and it had been compiled into 6 Tankoubon now.
http://i.imgur.com/ggytfoS.png http://i.imgur.com/DaceVho.png http://i.imgur.com/umFzFrD.png http://i.imgur.com/NRc95xT.png http://i.imgur.com/cb2GBkQ.png

Scanlation: http://bato.to/comic/_/comics/not-lives-r1153