The Demon Girl Next Door Series by Izumo Ito, 伊藤いづも

BEST FRENEMIES FOREVEROne morning, fifteen-year-old Yoshida Yuko wakes up to discover she has sprouted demon horns and a tail! Not only that, she learns from her mom that she has supernatural powers and an important mission—to restore her family’s glory by defeating the local magical girl. The magical girl in question is Chiyoda Momo, a student at Yuko’s school... moreBEST FRENEMIES FOREVEROne morning, fifteen-year-old Yoshida Yuko wakes up to discover she has sprouted demon horns and a tail! Not only that, she learns from her mom that she has supernatural powers and an important mission—to restore her family’s glory by defeating the local magical girl. The magical girl in question is Chiyoda Momo, a student at Yuko’s school. With strength that is only mediocre at best, Yuko’s task to vanquish Momo will prove more challenging than she realizes in this topsy-turvy magical girl comedy. less

The hilarious manga about a weak demon girl and her powerful magical girl rival that inspired the anime!Yoshida Yuko was living a perfectly normal (if poverty-stricken) life, but at the age of fifteen, she suddenly sprouts demon horns and a tail! Her mother explains that she's actually a demon named Shadow Mistress Yuko, once sealed away and cursed so that her family would remain poor for generations... moreThe hilarious manga about a weak demon girl and her powerful magical girl rival that inspired the anime!Yoshida Yuko was living a perfectly normal (if poverty-stricken) life, but at the age of fifteen, she suddenly sprouts demon horns and a tail! Her mother explains that she's actually a demon named Shadow Mistress Yuko, once sealed away and cursed so that her family would remain poor for generations. Now Yuko can break that very curse if she defeats Chiyoda Momo, a magical girl who goes to her school...but Momo is stronger than she is, knows how to manage magical powers, and is so freaking nice that she's actually helping Yuko out of scrapes! Yuko's too weak and uncoordinated to straight-up kill Momo, even if she wanted to, but she can't just be buddies with this generous magical girl, either--she has to break the curse on her family somehow. What's a demon girl to do? less

Ever since awakening to her demon powers, Shadow Mistress Yuko (a.k.a. Shamiko) has been fighting to free her dark clan from the curses placed on them by magical girls. But somehow, she wound up becoming allies with the magical girl who is supposed to be her rival, and now they're working together to track down a magical girl who disappeared from the town. A new demon invades the neighborhood in Volume 3!

The hilarious manga about a weak demon girl and her powerful magical girl rival that inspired the anime! Yoshida Yuko was living a perfectly normal (if poverty-stricken) life, but at the age of fifteen, she suddenly sprouts demon horns and a tail! Her mother explains that she's actually a demon named Shadow Mistress Yuko, once sealed away and cursed so that her family would remain poor for generations... moreThe hilarious manga about a weak demon girl and her powerful magical girl rival that inspired the anime! Yoshida Yuko was living a perfectly normal (if poverty-stricken) life, but at the age of fifteen, she suddenly sprouts demon horns and a tail! Her mother explains that she's actually a demon named Shadow Mistress Yuko, once sealed away and cursed so that her family would remain poor for generations. Now Yuko can break that very curse if she defeats Chiyoda Momo, a magical girl who goes to her school...but Momo is stronger than she is, knows how to manage magical powers, and is so freaking nice that she's actually helping Yuko out of scrapes! Yuko's too weak and uncoordinated to straight-up kill Momo, even if she wanted to, but she can't just be buddies with this generous magical girl, either--she has to break the curse on her family somehow. What's a demon girl to do? less

MORE POWERS, MORE PROBLEMSShamiko has accepted the request of a former Magical Girl to become boss of the neighborhood, and is beginning to manifest more of her demon powers. But between the appearance of another demon and a giant snake god sealed in a nearby mountain, there’s a lot more going on in Shamiko’s domain than meets the eye!