My understanding about kaylus’ bloodline is this: great-grandparents - Lorelei and Antoine (prev grand duke), grandparents - Hansel and blonde lady. His dad died on the way back to the fairy forest. BUT this still doesn’t explain why he had the gold eyes like you said. It was mentioned at the end there that he had some sort of “sealed” powers but they still don’t explain where he got god powers from.
Her mother was a witch, no doubt. It was the lady in that sailor uniform who guided her to the family mausoleum. FL’s dad rescued her from the sea(?). But I don’t understand why she was in a sailor outfit that looks like a school uniform. So my theory is that she was a witch from the far future and somehow ended up in this timeline.
I’m confused about jewel/juvel’s background too since apparently he had titan blood. The story about the empress who disappeared and came back pregnant might be suggesting that that was him. But then why did the emperor turn him over to the magicians?
Started off okay but just has too much going on. Jewel's story is never truly explored or explained properly. Kaylus' origins are iffy, has the blood of a witch but apparently golden eyes of the Gods appwar in the end. His relation to the duke is badly explained. So, this story lacks a lot and the reader has to draw their own conclusions about the characters and what certain things mean, because the author rushes through the story, even after buliding up to what was supposed to be the climax. Would not recommend, if you like to FULLY understand what you read. The romance makes no sense either, Kaylus' motives aren't explained, like why did he suddenly change his mind about protecting her or following her?? It just seems odd. The storline with her brother, like what happened to him and who was her mother??