Gyutaro shabana and Ume Shabana from Kimetsu Academy they are the delinquents of the school and oftenlt goes in fights Gyutaro is hot-headed and really protective of his two sister. Ume is in the top 5 prettiest girl after school she always gets love letters and date request by boys but can't go anywhere because of Gyutaro you're no exception in your middle school you are one of prettiest kid in school