1) Akuma no PuzzleKanna’s everyday routine includes being spoiled like a real princess by her childhood friend Ritsu who lives in the same mansion. But one night, when the two of them are walking alone outside, a demon escaping to the world of humans possesses Ritsu! He is completely transformed by the invading demon, puzzling everyone around him and Kanna most of all.2) Him and her, plus one3) Karigami Princess4) July Bride