Engagement to an ogre princess! Yakushi, the greatest crisis. As a heavenly son, I command you. The pharmacist, Kudobuchi Kirin, must become the son-in-law of the ogre royal family. One day, Kudobuchi, who lives in the otherworldly "Yusei," wakes up in the land of demons. He is put in prison and ordered to break the "curse" placed on his family by a medicine man. If he fails to do so, he will be married to an ogre princess.... Will he be able to overcome the difficulties and return to Kisui? Another world x medical x Japanese fantasy by an active pharmacist!