Suekko Omega, Shishi Jin O No Hanayome to Naru (Kadokawa Ruby Bunko)

[Machine Translation] A giant monster awaits the anxious Seiren, who is marrying into a neighboring country! Seiren, the youngest child of a poor village chief and a rare omega, is under pressure from the people around her to marry into the next emperor of the Byakuya Empire, the beast-man alpha, Hulun Chaos. She is also the first one to go into heat with her brother, who dotes on her, and she notices his clumsy kindness in the midst of their hectic but peaceful life together. However, one day, just before the wedding ceremony, Seiren is kidnapped by a group of people who are planning to revive an exiled country. A fierce battle over the kidnapped bride begins...?

隣国への嫁入り、不安を抱えた青蓮を待っていたのは―巨大なバケモノ!?貧乏村の村長の末っ子で希少なオメガ性である青蓮は、周囲の圧力によって白夜皇国の次期皇帝で獣人アルファの渾沌のもとへ嫁ぐ事に。青蓮を溺愛する兄の襲来や共に迎える初めての発情期、慌ただしくも平穏な生活のなかで彼の不器用な優しさに気付いていく。だが婚儀を間近に控えたある日、青蓮はある亡国の復活を目論む一座の手によって誘拐されてしまう。攫われた花嫁を巡り、苛烈な争いの火蓋が切られ!?