Luna Merlin attends Glenknight Royal Academy. Although Luna is a saint, she's considered a failure because her only ability is manipulating dreams. One day, while she's enjoying herself by manipulating her dreams as usual, a handsome prince named Andy somehow enters her dream...! Andy suffers from insomnia due to a curse placed on him by a demon, and he asks Luna to save him from his nightmares using her abilities. Summoned to the royal palace, Luna becomes Andy's personal sleep companion. A saint who manipulates dreams saves a cursed, sleepless prince through co-sleeping! A super sweet co-sleeping love fantasy from Shosetsuka ni Narou!