Koisuru Inma no Kinyoku Seikatsu

Lulu and Miku, a demonic couple who refused the task of "having sex with humans", tried to escape together. Their instructor from the demon world gave the taboo "lewd demon couple" a task to redeem themselves. What is it? A romantic comedy between a succubus and an incubus, by an up-and-coming artist! (Source: Ura Sunday, translated) Note: Includes 1 extra chapter.