Yukinari Sasaki, an average high school boy, has extreme girl-phobia and gets an allergic reaction whenever he touches them, until he meets an alien named Miharu who takes him to a planet that houses only girls.
When I was in high school, I recall reading about a fake book -- on the outside it looked like a classic (A Tale of Two Cities, as an example); inside it was hollow so that you could have your Mad Magazine collection (or something more nefarious) available for reading at school.
This series reminded me of this, after so many years, because the cover describes a fairly typical harem manga where Yukinari Sasaki is a small, shy boy who breaks out in hives around girls until he encounters Miharu from the planet Siren who pledges to rid him of his girl phobia.
This meeting actually happens in volume 1, but then Yukinari becomes a minor character and Kazuharu Fukuyama, a sexual harassment/ sadist), becomes the dominant character defrocking and and groping Miharu, Kirie Kojima (Yukinari's neighbor) and Koyomi (also from Siren). The stories are designed to provide Fukuyama opportunities for his mischief and are neither interesting or clever.
The art is okay, but I quickly tired of the glamorizing of Fukuyama, who makes Harvey Weinstein look like a saint.
My advice: don't read this and DON'T LET YOUR SONS READ IT!
Yuki is really drowning in snatch, here. What a good kid. Reminds me of simpler times. Women couldn't keep their hands off me. Now if they try the Secret Service raises a fucking stink and tases them. I bet Melania is behind that. Doesn't want to see her LOVING, LOYAL husband happy because she can't fit into Maharu's dress. JEALOUS!