Prequel to "Two Beings, or Not Two Beings?".
Dubliner Erin Wilde is a fairly normal highschooler in almost every regard - aside from that she despises Christmas. But everything changes when she meets Lady Kuro, an interdimensional witch claiming to be the sister of Erin's favorite author!
Having awoken her kinkind with the ability to travel through time, Erin hopes to help Kuro with her goals and to go back to last year's Christmas - the day she lost her mother.