Akuma na Ani ga Kahogode Komattemasu

Yuffie, the daughter of a nobleman, has a "brother" who is not related by blood. Nate, with his sharp intellect, mastery in both academics and martial arts, and foreign-style beauty, is flawless in every way. He is well-known as "the ideal of every woman in the world," but his true identity is that of a "non-human being" with black wings. Nate saved young Yuffie from kidnappers and, for some reason, ended up as her "brother." Yuffie, wary and unsure of his intentions, can't help but get flustered by his overwhelming affection...!? Even as she grows older, Yuffie’s attempts at finding a partner continue to fail due to Nate’s overprotective tendencies. Determined to have a "fateful encounter" and escape Nate’s overbearing love, she sets out on her quest...!? The ultimate knight x a young noblewoman struggling with marriage, in this heartwarming, over-the-top love comedy!