Spoiler
Well i've read that he was a regressor/turned back time so he did that so he could make everyone happy
But why he's acting like that to his uncle? Didn't he love his uncle?
He loved his uncle but he was bitter about his uncle since he discovered in the first timeline that his uncle doesn't truly love him more like the uncle felt an obligation to take care of Luca. Because he is the heir of the Vintervald. But he still loves Rudy with a hint of bitterness. He also thought that Rudy is still the same as in the past like can't feel loved or can't genuinely love someone. That's also the reason why Luca won't let Rudy flirt or whatever with Judith because he doesn't want Judith to be hurt in the future.
Owhhh...I see.... He did love his aunt even just a little isn't he. No wonder he always protesting that he's not a child. I'm looking forward on Luca's monologue
Is he reincarnated or turn back time?