Summary
Aki Sendou is Haruto’s half-sister, having left the family home with her mother following their divorce. They resided alone for several years before her mother remarried Takahisa, who is also the father of Masato. Years later, after her first day of middle school, Aki was pulled into Satsuki and Takahisa’s hero summoning ritual while returning home with her new siblings, Miharu and Masato.
