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.
When Basara discovers that one of his step-sisters is a succubus, and his other a recently crowned demon lord, all hell breaks loose! Basara is almostforced into a contract with his demonic sisters where he would act as their eternal servant-but something goes wrong.
Instead, a reverse contract is formed, and Basara becomes the master.
Between fending off their seductive advances and coping with the attacks of rival demon contractors, Basara has a big learning curve if he is to survive.
Seven Seas Entertainment Testament of sister new devil, the vol. 7, paperback/tetsuto uesu
