After becoming the strongest in the world before she even knew it, Azusa entered into a new lifestyle with her first pupil, Laika the dragon, and discovered fun and enjoyment in it that she hadn't known before. But then, one day, a young girl calling Azusa her "mama" shows up and proclaims that her younger sister wants to kill Azusa. But Azusa has no memory of giving birth to these two girls, or of becoming a mother at all...
I know 'cause my little 
sister looked into it!
!أعرف لأنّ أختي الصّغيرة بحثت في الأمر
Das weiß ich, weil meine Schwester
da nachgeforscht hat!
Mi hermana menor te investigó.
Mi hermana menor te investigó.
C’est ma petite sœur
qui me l’a dit !
Lo so perché la mia sorellina si è informata!
Eu sei porque a minha irmãzinha pesquisou!
Я знаю, спасибо младшей!