Renkin 3-kyuu Magical? Pokaan

Plot
The story depicts the misadventures of four princesses from the Netherworld: Uma the Witch, Pachira the Vampire, Liru the Werewolf, and Aiko the Android along with Keimie (the princess' invisible chaperone). These princesses are adapting to life in the human world and reside in their Garakuta House (a makeshift treehouse complex with the name being a homage to the author of the same name) in Hikarigaoka (a fictional Japanese city that's not to be confused with Hikarigaoka Station). The girls are faced with small self-centered problems such as finding a boyfriend, blending in to society, learning about Earth's cultures, and staying one step ahead of Super Doctor K-Ko.