Summary
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. From a classmates request, 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 doesnt 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!
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There's more to it than what the summary describes. Apparently the MC doesn't necessarily get turned into a girl, but rather controls a human avatar. The avatar was once human, but got turned into an avatar and has to search for a player in order to win a deadly survival game. If the MC and the avatar lose, then the Avatar disappears and the MC becomes the new avatar, thus repeating the cycle.
Its interesting to say the least.