Ruka is the daughter of kagome Higurashi. After kagome believed that inuyasha was dead she went to her normal time and lived on but soon forgot of her journey. She married a wealthy man and had 2 children which her older child a son named after her brother who died in a plane crash. Her younger child an adventurous teenage girl named Ruka. Maybe she'll find true love like her mother did when she entered the feudal era.