Hoshino Ren (17) is the most unremarkable second-year student at Hanaoka High School—and she worked hard to get that way. Her greatest weekly thrill is being first in line for ramen at the convenience store on Friday nights. No more, no less. A perfectly predictable life.
Then, on a perfectly ordinary Monday morning, a pulsing violet circle of light appears in the middle of her six-square-meter apartment and spits out a girl with floor-length silver hair, a gown worth more than the building Ren lives in, and a jeweled staff that is absolutely, definitely glowing.
She is SERAPHINE VON ISKAR—First Princess of the Kingdom of Iskar, Heir to the Throne of Elvareth, Holder of the Covenant Seal of Three Realms, and the most powerful woman in the fantasy world of Elvareth. She is also completely incapable of operating a faucet.
Two more portals open. Out tumbles LYRA IRONFALL, the greatest knight in Iskar's history, who immediately draws her sword at Ren's wardrobe—and then spots a broken USB drive on the floor and decides it's a sacred relic. Behind her, MIRIEL ASHVANE, the palace's research mage, steps through while reading her notebook, doesn't notice she's crossed dimensions, and begins cataloguing Ren's ceiling as a 'possible atmospheric deity chamber'.
Now Ren has to hide three interdimensional guests from her terrifyingly perceptive landlady, her nosy neighbors, and her school's guidance counselor who is growing increasingly suspicious about her plummeting grades.
What Ren doesn't expect is that Seraphine—imperious, dramatic, constitutionally incapable of admitting weakness—keeps looking at her in a way that has nothing to do with how a princess looks at a convenient commoner.
And in any world, the heart is a terrible liar. Even if one party doesn't know how to use liquid soap.