Unnamed Memory, Vol. 2 (light novel)

"The return of an ancient empire ... After searching for hundreds of years Tinasha has finally found Lanak, the love of her life long before she was ever a witch. The pale and powerful man spirits Tinasha away, leaving Oscar in the dust. By all accounts the witch has joined her ancient beloved's quest to dominate the mainland, but could she secretly be after something more? Oscar has always known that he's the only one capable of killing Tinasha, and with war threatening to engulf the entire continent, it seems he may have to prove it"--