it's isn't so confusing actually, but maybe the storytelling caused this. anyways, our athy is born from the love between diana and claude. as claude didn't want to lose diana because athy had a tremendous amount of mana, he wanted her to choose him not athy. but diana decided to give birth and athy's existence became the demise of diana. heartbroken, claude used black magic to forget diana and erase his feelings. however, meeting athy before the magic fully established in him he started to remember etc. apart from their relationship, the emperor lucas cast aside preciously take over the anastacus' body to take revenge on the empire and lucas?? to prove himself. so they are using jeanette's black magic to further curse claude. but athy now broke that curse by using the sacred tree. idk if this helped, you can ask more if there's smth you are curious about!
Can someone please explain to me the plot? Like I truly don't get it