A Succubus Girlfriend's Forbidden Breeding Manual!

[This book features girls' love]

Can you really deal with a short-tempered girlfriend and save the world at the same time?

Sixty years ago, after the war between humans and demons ended, a barrier appeared between the human and demon realms, separating the two races and ushering in a brief era of peace. A year ago, humans suspected the demons of plotting something evil and sent one of their finest fighters to the demon realm on a mission. But she vanished without a trace. They could never have imagined that the sole reason for her disappearance was... that she'd gotten herself a cute demon girlfriend.

Now, a year later, humanity is taking action once more. What awaits her is an ex-girlfriend who could blow up the demon realm at any moment, a rookie junior sent by humanity to carry out a mission, the daughter of the most mysterious demon ruler, and her own short-tempered succubus girlfriend.

Anyway, do your best... Magical Girl Yaito.