In this timeline Aeroc never remembers anything. It's uncertain until the end if he's the same Aeroc or a completely different one. In the second timeline, Kloff remembers things through dreams, which makes us think he's the same Kloff, but this never happens with this Aeroc. In the end, Kloff even expects that through the love he gives to this Aeroc, the original one can also feel loved. So, even Kloff end ups thinking he's a different Aeroc.
And that last bit will never not piss me off...
(SPOILERS)
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This timeline's Aeroc deserves to be loved as his own person and not as a substitute for Kloff's victim. He still suffered a lot because of Kloff and the mf doesn't even have the decency to spare more heart towards him, he keeps seeing "his" Aeroc and I hate him for it.
Let him go.

Can someone spoil me? At the end of the novel will they remember every timeline or they’re like separate stories?