A prince, a house steward, and an assassin

After fighting with her childhood friend Ouji, 18-year-old Nazuna fell off the stairs. And suddenly, she crashed with a rude yet handsome guy! Nazuna goes back home only to discover that the prince Edward is on homestay in Japan and will live with her in her house! Also, he's brought his butler to stay with him, and Nazuna can't say no or her parents won't get the money from the homestay program! Things will only get crazier when Prince Theodore and his butler also come into the picture... A romantic, royal comedy between the tenants at Nazuna's house!