The Testament of Sister New Devil

🇯🇵新妹魔王の契約者(テスタメント) · Shinmai Maou no Testament

MangaShounenFinished🇯🇵 First published in 2013ActionEcchiFantasyRomance

Tetsuto Uesu story · Kashiwa Miyako story, art

When his oddball father suddenly decides to remarry, high school student Toujo Basara is about to acquire some very peculiar new family members. Enter his new seductive step-sisters, Mio and Maria.

Synopsis via AniList