Douchi ga Akuma YO?  

Which is Devil?, どっちが悪魔YO？

A young woman named Liz, who serves as an apprentice in the devil realm, arrives on Earth to complete her final exam for becoming a fully-fledged demon. The task is to make a human boy named Kanato unhappy within seven days. Despite being naturally affectionate, Liz struggles with this objective and fails regardless of her efforts. Additionally, five original works by Naho Maita are included in the collection alongside the main story.