Shū Sakamaki

Shū is the oldest son of the Sakamaki household and the current master of the mansion. He is the first son of Beatrix. Shu grew up being given too much unwanted attention from his mother. Due to his mothers rivalry with Cordelia to be Karlheinz's best wife, she put all the pressures on the young Shu. He is one of the brothers who seems to have any prior knowledge of Yui's arrival, mentioning "that person" had contacted him asking to have her stay with them as a guest. According to the students of the school, Shu is the owner of the music room and can always be found sleeping there. Yui needs to use a lot of persuasion in order to get him awake and do something for himself. Shu loves music despite being apathetic and lazy. His only friend was a human boy named Edgar, who died in a fire, set on his village by Reiji. Shu was unable to save him, so he thought that his life was limited from humans. Despite Shu being the eldest, he's never responsible for looking after his brothers and the house. Instead, he mostly pushes these duties onto Reiji.