Right after the war, Harry Potter is de-aged and sent to an alternate universe by someone who aspires to be the next Dark Lord. When he wakes up, his parents, Sirius and Remus are alive, Ian Potter is the apparent Boy-Who-Lived and he is Voldemort's most trusted Death Eater? Harry must find a way to get back to his original universe and not get caught by the Ministry.

As the clock stuck midnight on the last day of the year, Kuroko Tetsuya disappears mysteriously, leaving no traces that he had ever existed. As Seirin and the GOM struggle to figure out what happened to their beloved shadow, they will uncover truths about him they never knew. Kuroko Tetsuya never existed. Or did he?