This story takes place in Florida, USA. The main characters are the lovable members of the Anderson family; each has their own characteristics which both conflict with and support the others'. By going through many events together (meaningful events as well as weird ones), the bond between them grows stronger and tighter. (Source: MU, edited)

Brothers Lucifer, Mammon, Leviathan, Satan, Asmodeus, Beelzebub, and Belphegor are among the most powerful demons in the Devildom, serving as officers on the student council at the Royal Academy of Diavolo (RAD). However, being avatars of the seven deadly sins, their behaviors often tend toward the extreme. Their everyday antics belie their high status and fearsome reputations among others of their kind. When viewed behind the scenes, the members of this family are more lovable—and laughable—than they first seem!

The new slapstick story will depict Komugi-chan and her rivals as they juggle their daily lives as students, idols, and magical girls with laughter and tears. Komugi Yoshida is a somewhat clumsy second-year middle-school student whose strong point is her spiritedness. She performs as an idol like Kokona Saionji (her classmate and close friend) and Tsubasa Kisaragi (an idol who dresses in male clothing). However, unlike Kokona whose popularity is skyrocketing and Tsubasa with her charisma in male attire, Komugi's only gigs are low-end ones like those at the local shopping district. Still, Komugi has her dream as she lives her dual lives as a idol and a middle school girl. One day, a mysterious injured creature named Usa-P appears before Komugi. Komugi gives Usa-P medical treatment, and Usa-P, in consideration of Komugi's kindness, asks if she wants to be a Legendary Girl who can use magical powers. Having become a reluctant Legendary Girl, Komugi battles strange masked figures who suddenly appear! As a newly deemed Magical Nurse, she fights still more waves of masked figures. Meanwhile, a Magical Maid, a Magical Sister, and more also appear to make it a three-way battle!? Can Komugi handle the three roles of middle school girl, idol, and Magical Nurse? And, what lies ahead in these battles and her dream...?! (Source: ANN)

Average high school student Yuuko Konagai tends to be rather shy and socially awkward. Due to this, besides earning rather mediocre grades, she barely has friends inside her class. However, after a monotonous day at school, she returns to her long-awaited haven—home with her cats Maa, Shi, and Ro! With their unique personalities, the three possess bodies similar to those of humans, retaining the ability to speak and communicate. Every day, the adorable bunch awaits their owner's return to shower her with much-needed companionship. Nyanko Days highlights the life of Yuuko and her cats as they brighten up each moment and make new friends in the passing days.