Fight back!-Sequel to It's my life!-Book 2

It's been ten years since they left the academy and now Yume and Subaru are raising their children with the help of their friends. Kaiyo is a genius and is a first year in high school even though she's only ten. Yume and Subaru support her and her siblings every step of the way but when the plane they were on goes missing, Kaiyo can't help but get involved in the investigation. She won't stop at anything to find her parents and make sure that they're safe and who over took them is punished.