is a Japanese manga series written and illustrated by Kazuki Funatsu. It was serialized in Shueisha's manga magazine Grand Jump from June 2016 to November 2019, with its chapters collected in nine volumes. An alternate ending, titled Sundome!! Milky Way Another End was serialized in the same magazine from February to December 2020. In North America, the series is licensed for English release by Seven Seas Entertainment.
Sakura Yoshitake is a salaryman who works for a food company. One day while driving home, he crashes when he sees a UFO and a terrifying alien. He wakes up in his apartment to find a beautiful woman named Lune near him. She says she has fallen in love with him and wants his child. However, whenever she gets embarrassed, like whenever they try to have sex, she loses control of herself and transforms into the terrifying alien, complicating their love life.
Sundome!! Milky Way, written and illustrated by Kazuki Funatsu, was serialized in Shueisha's manga magazine Grand Jump from June 1, 2016, to November 20, 2019. Shueisha collected its chapters in nine volumes, released from July 19, 2017, to February 19, 2020. A sequel, titled , was serialized in Grand Jump from February 26 to December 22, 2020. A single volume was released on February 19, 2021.
The series is licensed in North America by Seven Seas Entertainment and published under its Ghost Ship adult imprint.