I teared up at this chapter… So my understanding of what was happening was right. Athy may have reincarnated as Athy once again. So this is like her second time being Athy. Claude was also using black magic to forget Diana. He must have loved her too much… It’s really sad that the past Athy never even knew the hate towards her and the cause for it. Deep down Claude really loves Athy but chose to forget.. Y’know I understand that he didn’t want the pain but that’s really mean to Athy who’s left behind.
Also, massive thanks for the translation and update <3