Manga publisher, Seven Seas Entertainment announced Tetsuto Uesu and Fumihiro Kiso’s The Testament of Sister New Devil Storm! the supernatural comedy spin-off to The Testament of Sister New Devil where demonic step-sisters vie for more power and pleasure than ever before!
High school student Toujo Basara’s life has taken a turn for the strange. Although hesitant about his father’s sudden decision to remarry, he can’t deny it comes with a couple perks—drop-dead gorgeous step-sisters…who also happen to be members of a demon clan! Mio Naruse is a Demon Lord and Mario Naruse her succubus servant. Chaos and passionate antics ensue as Basara gets acquainted with his new demonic siblings, trying to protect them from dangerous demon rivals and struggling to keep up with their lusty, devilish appetites.
Seven Seas will present the The Testament of Sister New Devil Storm! manga series for the first time in print in North America as single volume editions, each shrink-wrapped for mature audiences. Volume 1 will be released on September 26, 2017 for $12.99 USA / $14.99 CAN.