Responses
SPOILERS!!!
asiel sacrificed his heart in order for sienna to go back in time. the nachts will only remember the past after sienna healed the king and made her his knight. it was because of loreinna who thought that asiel hated sienna so she followed him at the garden (?) and used her powers on him but it backfired as asiel didn't hate sienna but is really in distraught as he thinks that sienna only hates him.
Nice! Im so glad they remembered. Mc doesnt have to suffer from those old memories alone
the duke seems like he knows something... is it possible that one of them asked for her to be reborn ?