Hero x Anti-Hero + Villain

How hard can it be to find your reincarnated true love again? You'll only look different, think different, and have no memories of each other. But your soul mates, right? What are the chances that you’d end up mortal enemies? Pretty high, apparently!

Fabian Mogallus has only just now remembered his past life as Imai Masaya, but has also promptly forgotten every choice, action and memory of his new life until this point. This is a problem, because Fabian Mogallus is the infamous "Red Fox"! A brooding and dashing Anti-Hero who has made nothing but the wrong choices, and now the shy and gentle-hearted Masaya has to live with them!

But it gets more complicated than that! Turns out, most of the reincarnated souls on Mundi never regain their memories, and being the one who does... you thought that makes them the Chosen One? Nope! They're the one who MARRIES the chosen one! Who is the chosen one? Why, only the true hero, the Anti-Hero Fabian's arch-rival, the goody two shoes Morvidus!

[Isekai - High Fantasy]