Sundome!! Milky Way manga volume 7 features story and art by Kazuki Funatsu.

Lune, the gorgeous xenomorphic alien, cannot conquer her shame and mate with the horny yet virginal Yoshitake. And now the house is full of competition—Haruka Yuizono, Lune’s sister Levelane, Mika Kimijima, and Kino Kadokura. Not to mention, Yoshitake’s also going after other women all the time!! Have we mentioned the sexy ghost?

Then arrives Rimmaeje, another Supopoponian here on Earth, to get the jump on Lune and jump on Yoshitake! Which buxom beauty will save their world, or will Yoshitake rock the world of a mere Earthling first and ruin everything?!