Dantoudai No Hanayome - Sekai Wo Horobosu Futsutsuka Na Tatsuki Desu Ga.

A "dragon" appears from a container that fell in front of Dazai Ryunosuke's eyes.The disastrously beautiful "dragon", Rinne Irako, had been condemned to death as a world-destroying calamity, and was being transported to a place of refuge.Rinne Irako was sentenced to death and transported. But as fate would have it, the "dragon" girl had a miraculous encounter with a boy, and her destiny was about to change drastically.