”On the first day after moving together to a new place with her family because of her father’s job, our dear heroine Itou Ayako, stumbles upon a pretty girl being bullied. Chasing away said bullies, quickly becoming friends after that, Ayako swears to become ‘her’ knight. It is only later, that Ayako discovers that ‘she’ is a ‘he’. That is her first meeting with Hanashima Rei, who’d both become her childhood friend and is a pretty boy who would make anyone turn around to look at him. Little does she know that Rei would also be 99% mentally unstable, and it will be Ayako's own choices in life that will determine just how drastic Rei’s methods will become in keeping his ‘knight’.