It's a novel adaptation, the ML is searching for hs lover but due to some magic, he cannot remember that his personal guard is his lover(fl). The Fl decides to fake her own death to run away from him. The season ends with that. The fl finds out she is pregnant with the ML child.
This was my first bl and will always be the best. The Ml is on the grey area for me. I have read the nth times and it never gets old(づ ̄ ³ ̄)づ