Bakugou is an Alpha and Izuku is an Omega.They are both males.Being an omega lets izuku able to get pregnant despite him being a male. Izuku is trying to be like All Might one of the strongest Paladins .He fought an incredibly powerful dark wizard before he met Izuku,who went by the name "All for One".Izuku goes on a long dangerous quest to find All for One.Along the way,izuku meets Katsuki who is a Barbarian.Katsuki is an Alpha and izuku is an Omega.