Kyouya dan Dino punya adik perempuan, dan ternyata adik perempuan kesayangan mereka mempunyai rahasia masing-masing! Miyuki hibari, adik kandung sang skylark yang lembut dan feminin punya suatu rahasia yang disembunyikan dari kakaknya tersayang. Karin, adik angkat Don Cavallone yang minim ekspresi dan but tentang dunia memiliki rahasia tentang keluarga aslinya! (DinoxOC)(HibarixOC)

Yup. Ten years later and Lambo is attending Namimori-chuu. Everyday one of his onii-sans will pick him up. Craziness will ensue. That's for sure. Sucky summary I know.

after tsuna got a call from italy ministry of education and said that no school in italy want to accept lambo anymore on his middle school year, he make a decision. to send Lambo to japan and continue his education in Namimori middle. now what kind of adventure that was waiting for our young lightening guardian?