Sakamaki household

The Sakamaki brothers are the sons of Karlheinz, but from three different mothers. The oldest sons, Shu and Reiji were conceived by Karlheinz's second wife, Beatrix. The triplets, named Ayato, Kanato and Laito, were born from Karlheinz's first wife, Cordelia. The youngest, Subaru came from Karlheinz's third wife, Christa. Even though they are brothers, they don't get along with each other and they seem rather distant due to the way they were brought up.