The Princess's Identity

Princess Alana, daughter of King Eric and Queen Hye Mi, must be protected at all costs. Princess Alana was not allowed to be in any kind of relationship with anyone in the kingdom beside those who work in the castle. Meaning no friends nor boyfriends. After King Eric returned to the kingdom, he felt like his daughter should have more protection. The King then ordered Captain Hongjoong and his royal guards Seonghwa, Yunho, Yeosang, San, Mingi, Wooyoung, and Jongho to keep an eye on the princess. There were rumors going around the kingdom about the Stygian kingdom wanting to come after the princess. Who made such rumors? Is it true? Even if it were true, would this be the reason Princess Alana isn't allowed to have friends?