The Testament of Sister New Devil

## The Testament of Sister New Devil A boy from a demon-hunting bloodline suddenly gains two new stepsisters, a future demon lord and a succubus, and must protect them through a magical master-servant pact. High schooler Basara Toujou's quiet life is upended when his father remarries and brings home two beautiful new stepsisters, Mio and Maria. The pair quickly reveal a secret: Mio is the heir to the demon lord's throne, hunted by rival factions, and Maria is the succubus sworn to guard her. Basara has a secret of his own, as the last survivor of a clan of "Heroes" trained to slay demons. When a botched protection contract binds the sisters to him through a master-servant pact, Basara chooses to shield his new family from the warring forces that pursue them. A flashy, fan-service-heavy supernatural action series mixing demon-versus-hero battles, harem comedy, and an unlikely found family under one roof.