Kitaku Tochuu de Yome to Musume ga Dekita n dakedo, Dragon datta. On the way home I got a bride and daughter of twins, but it was a dragon.

Synopsis

High school student Kazamachi Kunpei suddenly receives a call for help from a dragon girl Aoinoun Dragoline, claiming that "her children had been kidnapped." Somehow, he managed to capture the fleeing culprit. However, what he retrieved was not the children but instead two huge eggs. Upon touching them, the eggs suddenly began to hatch... (Source: MU)