The fire villain who put Fang in a coma, is the reason his parents are gone when he wakes.
Saber Fei hunted him down and came close to victory, but his flame was put out.
Clair Fang Song (Fei) dies later on, when the fire user decided to save her the time hunting him and burns her alive in her garden.
This ties in to a piece I did last year.

Fang finds them and plants a flower from his mother's garden.