When Kotaro Satomi discovers an apartment for the ridiculously low rent of 5000 yen a month, he knows there must be a catch. But it's not until AFTER he's moved in that he finds out that he's not the only one laying claim to Room 106 at Corona House, starting with teenage girl ghost, Sanae, who's currently haunting it! Still not enough to break the lease? Let's add in a Magical Girl, Yurika, who wants to take control of the room in order to block it's powers from evildoers, a luscious Subterranean bombshell, Kiriha, who needs the room to launch an invasion of our world, and a fiery space princess, Theiamillis, who... well, you get the idea. Can a lone high school student on a limited budget withstand the combined forces of the supernatural, metaphysical, subterranean, and alien worlds? Especially when they're all also incredibly adorable? To keep that incredible 5000 yen a month deal, he's certainly going to try in INVADERS OF THE ROKUJYOMA!?