Base on spoilers on comment section
Yes, yes he is.
!Also a spoiler!
Luca is a regressor, he came back from the past.
WHAT. wait why did he come back in time did his aunt die
SPOILERS AHEAD (from comment sections)
Yes and apparently he thinks his uncle doesn't love him that's why he's devastated when his aunt die, (This is where the Theory where Luca use his wish to go back in time and to protect his aunt) also there's some spoiler that his Aunt try to protect Luca before going back in time thus make Luca more attached to his aunt
ANOTHER SPOILER
Judith thinks she died (in modern world) and end up as Luca's aunt, BUT she is the REAL aunt before going back in time, it just so happen that she remembers her last life and not the life with Luca.
So she was horrible to Luca before?
Yes at first, but some spoiler says before The aunt die in the past there's a scenario where the Aunt protect Luca from the relatives, That's why the relatives kill her.
To many imformation (づ￣ ³￣)づ thankssss
i think Luca also travel in time