Butlers: Chitose Momotose Monogatari

Butlers: They are keepers of a long past and a predetermined end. Jay coexisted peacefully with his younger sister Tenna and Hayakawa, another Butler. But those calm times abruptly came to an end. Jay was hurled 100 years into the future while Tenna was absorbed into the vacuum. Jay discovers that his former house has been replaced by a school called Koyomi Academy. As he searches for hints about the past, Jay adopted the name Jinguji Koma and rose to the position of president of the student council at the school. Jay will soon learn the truth about this universe.