im so confused w gaspar?? whats up w him y he acting like that

he's possessed by someone else because it's a full moon

SPOILERS
the guy in gaspar's body is the emperor's brother. he's a magician and has a lot of mana. when MC's mother was pregnant with her, the emperor's brother's mana leaked into the fetus, which is why she's illegitimate and a child of royalty, even though biologically gaspar's