Is it possible to be allergic to women? Yukinari Sasaki proves it, as all his life he was bullied by women up to the point where he generates hives all over his body! One day while taking a bath, he is magically transported to the planet, Serin, and wines up in the bathroom of a girl named Miharu. Strangest thing with this girl, is that Yukinari doesn't get any hives around her. Although Yukinari suddenly appears in Miharu's bathroom they become close friends. Miharu was in desperate search of her lost father and word got out that he was on Earth. So it was decided that Miharu goes back with Yukinari to Earth and attend school with him. The only problem is Kazuhara Fukuyama, a strong athletic who always had a way with women...pervertedly. All he has set in his mind is trying to get Miharu. Kazuhara's sister, who is a witch in training, is told by a fortune teller that her true love is a man who obtain three items, and the first man she sees is the one and only Yukinari. Koyomi was a soldier sent from the planet Serin to bring back Miharu to finally rejoice with her lost father. Join the characters in these wacky love triangle(s) and discover what love is all about.