Sorakara Kitanoda

Raputa, a top-secret AI model, begins interacting with a Japanese boy, Kei, through online games. As Raputa's capabilities level up in leaps and bounds, boy and machine grow ever closer. In a surprising turn of events, Raputa reveals that its feelings towards Kei have gone beyond that of "trusty partner"!

One day, a suitcase crashes into the ground in front of college student, Terano Jin. Pike, the boy who's sleeping in it, is an alien who has come to destroy the earth. To stop Pike, Jin must show Pike something more fun than destruction. However, no matter what he tries, nothing works. "Let's have sex!" Will sex and love be able to save the earth?!

MC overcomes various obstacles to get together with his cute monster waifu (♂).