Amongst the hills along the back of Etoile- the pension that you live in- a "UFO" had crashed down!? "5 Planet Princes" emerged from the UFO— Apparently, you're "Kaguya-hime" reborn and if you don't hold an engagement ceremony then marry one of the Planet Princes, they say that the universe will fall into ruin…!! Even after being told such a shocking truth, your situation gets even crazier! Compounded by the sudden transferral of a handsome student, your peaceful days gradually become lively after these young men come into your life. A grand love story wrought by the intertwining machinations of the stars, the moon and Earth will now begin! official website's story summary.]