100 Sleeping Princes & the Kingdom of Dreams
夢王国と眠れる100人の王子様
The heroine is an ordinary girl, until one day she is invited to another world and becomes the princess of the dream world, where people live on dreams as their energy source. One day, the dream world comes under attack by something called "yumekui" ("dream eater"),and many princes fall victim to it. Since the princes cannot wake up after having their dreams stolen, the heroine must wake them to save the dream world.
